Seeds of Life Notes Questions and Answers Class 5 Basic Science Chapter 4 Kerala Syllabus

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Seeds of Life Class 5 Questions and Answers Notes

Class 5 Basic Science Chapter 4 Question Answer Notes Pdf Seeds of Life

Basic Science Class 5 Chapter 4 Question Answer Kerala Syllabus

Let Us Assess

Question 1.
What is the change in the size of the cotyledon when the seeds begin to germinate? What is the reason for this?
Answer:
First, the cotyledons get bigger because they soak up the water, which helps the seed start to grow. As germination happens, the baby plant grows; it uses the stored food inside the cotyledons, causing it to shrink. Once the new plant has leaves and roots, the cotyledons are done with their job and will shrink and fall off.

Question 2.
Classify the different plants you see around, according to the method of germination from seed, stem, root and leaf.
Answer:

Plants that germinate from
Seed	Stem	Root	Leaf
Mango		Dahlia	Bryophyllum
Tomato	Rose	Asparagus	Snake plant
Paddy	Sugarcane
Pea	Mint/puthina
Pea	Grapes
Wheat	Hibiscus
Jackfruit tree	Muringa
Cashew tree	Sweet potato

Question 3.
Complete the table given below:

Method of seed dispersal	Adaptations of seed
	Fleshy parts. Parts that help it cling to other things.
	The weight of the seed is less. Hair-like parts to fly
Through water
	When the fruit ripens, the outer shell splits open, and the seeds are scattered outside.

Answer:

Method of seed dispersal	Adaptations of seed
Through animals and birds	Fleshy parts. Parts that help it cling to other things.
Through air	The weight of the seed is less. Hair-like parts to fly.
Through water	Seeds are able to float. They have protective covering to prevent the seed from wetting.
Seeds that burst open	When the fruit ripens, the outer shell splits open, and the seeds are scattered outside.

Extended Activities

Question 1.
Collect some seeds of different types of vegetables and germinate them. Observe and record the time difference in germination of the seeds. Plant the germinated seeds.
Answer:
The data given below is for your reference. Results may vary from the given data.

Plants	No: of days required for germination
Tomato	4
Cucumber	3
Spinach	3
Pea	4
Bean	3
Pumpkin	4

Question 2.
Discuss and find out what actions can be taken to protect plants that are declining in your locality.
Answer:

• Protect the places where these plants live, like forests or wetlands, from being cut down or changed for other purposes.
• Check on the plants regularly to see how many are there and where they are growing. This helps us understand if they are okay or need help.
• If the place where the plants live is not good for them anymore, make it better by planting more plants. stopping pollution, and taking care of the soil and water.

Seeds of Life Notes Questions and Answers

Question 1.
Collect a variety of seeds. Display the seeds in your class and write about their characteristics.
Answer:

• Colour — Black and white
• Size — Usual size
• Shape – A distorted spherical shape
• Other features – Enough weight.
• No damage to the shell.
• Sinking in water.

Question 2.
Even though the seeds have life, will all the seeds buried in the soil germinate? Why don’t all the seeds germinate?
Answer:
Some factors are needed for germination. A lack of these factors may hinder the germination of seeds.

Question 3.
What factors are required for the germination of the seed? Write down your guess.
Answer:
The factors required for germination may be (guess):

• Water
• Soil
• Air
• Sunlight

Question 4.
Plan an activity to find out the factors necessary for seed germination and note the observation in the following table:

Day	Glass 1 (Given all factors)	Glass 2 (Given all factors except soil)	Glass 3 (Given all factors except water)	Glass 4 (Given all factors except sunlight)
One
Two
Three
Four

i. Take some wet soil in a glass and put some pea seeds in it. Label it as glass 1. Place it in an area where it will get sunlight. Water should also be given at the required rate to maintain moisture. Observe it every day. What all factors did the seeds get?

Answer:

• Soil
• Water
• Air
• Sunlight

ii. Put a wet cotton ball in a glass and place the seeds on it. Label it as glass 2.

iii. Label a glass as glass 3. Fill it with dry soil (i.e., without water) and place the seeds on it. Observe the seed.

iv. Get a steel glass, fill it with wet soil, place the seeds in it and label the glass as glass 4. Cover it with a lid to prevent the sunlight from falling in it.

Answer:

Day	Glass 1 (Given all factors)	Glass 2 (Given all factors except soil)	Glass 3 (Given all factors except water)	Glass 4 (Given all factors except sunlight)
One	2 seeds  germinated	0 seeds germinated	0 seeds germinated	0 seeds germinated
Two	4 seeds germinated	2 seeds germinated	0 seeds germinated	2 seeds germinated
Three	More seeds germinated	More seeds germinated	0 seeds germinated	More seeds germinated
Four	More seeds germinated	More seeds germinated	0 seeds germinated	More seeds germinated

Question 5.
Observe the germination of the green gram seed in the illustration.

Note the observations in the following table:

Answer:

Question 6.
Examine the glasses from previous experiments.
a) Which plant grows best after germination?
Answer:
Plant in the first glass.

b) Which factors did the best growing plant receive?
Answer:

• Sunlight
• Air
• Water
• Soil
• Temperature

Question 7.
Plants make their food in their leaves, don’t they?
Answer:
Yes, plants make their own food
The food for the plant, until the seed germinates and grows a leaf, is obtained from the cotyledon.

Question 8.
How many cotyledons does a pea seed have?
Answer:
Two
Have you observed the change in the cotyledon as the plant grows?

Look at the cotyledon in a corn. Are there two cotyledons in a corn as in pea seeds? There is only one cotyledon in a corn. Endosperm is the part attached to the cotyledon. In plants with only one cotyledon, the food for the plant is obtained from the endosperm until the seeds germinate and grow their leaves.
The baby plant inside the seed receives food before germination through the structures called cotyledons.
In plants like peas, two cotyledons are present, while in plants like corn, only one cotyledon is present.
In plants with one cotyledon, food is obtained by the embryo through endosperm.
Endosperm is the reserved food material seen attached to the cotyledons in plants with only one cotyledon.
The radicle is the part that germinates and grows downwards from the seed.
Plumule is the part that germinates and grows upwards from the seed.

Question 9.
Germinate seeds of tamarind jackfruit, cashew, rice and corn. Observe the changes that is seed undergoes as it germinates. Carefully observe the germinated seeds using a handle Carefully open the seed and draw the cotyledon and endosperm in the science diary.
Answer:
Below is the picture of green gram and corn seed bursting. Try to draw it in your science diary.

Seed Germination: The seed becomes soaked, and the outer shell bursts. First, the radicle and then the plumule emerge. The radicle becomes the root of the plant. The plumule becomes the stem and leaf. The growing plant consumes the food stored in the cotyledon or endosperin until photosynthesis is fully functional.

Question 10.
Why do plants store food in seeds?
Answer:
Seed does not have a leaf or any other structures for the production of food through photosynthesis.
They need food for the survival of the embryo present inside. To serve this purpose, seeds have reserve food material in the form of endosperm and cotyledons in seeds.

Question 11.
What seeds do we eat?
Answer:
Edible seeds are:

• Pea
• Green peas
• Pumpkin seed
• Chia seed
• Sunflower seed
• Jackfruit seed

Question 12.
Which parts of the plants in the picture give rise to new plants? Visit the biodiversity garden and collect information. Grow plants other than from seed in the biodiversity garden and record the inferences.

Answer:

Plants	Part of the plant used to propagate a new plant
Hibiscus	Stem
Queen of the night (nisagandhi)	Leaf cuttings
Pagoda flower (krishnakireedam)	Root
Miracle leaf plant (ilamulachi)	Leaves
Money Plant	Stem
Rose plant	Stem cuttings
African violets	Leaves

Question 13.
What creatures do you know that transport plant seeds to different places?
Answer:

• Squirrel
• Cow
• Bat

Question 14.
What is the role of humans in delivering seeds to different places?
Answer:
Role of humans in seed dispersal:

• We eat fruits and throw away the seeds, taking them to new places.
• We bring seeds from foreign countries and grow them at our place. Plants like coffee, spices etc, reached India through trading.

Question 15.
Do organisms alone distribute the seeds? Discuss
Answer:
Other non-living factors that disperse seeds are:

• Wind
• Water

Seed dispersal is the process in which seeds from the mother plant reach different locations.

Seed distribution is important because:

• If all the seeds of a plant fall and germinate at the base of the plant, they will not get the soil, water, sunlight, and minerals they need to grow. So, the seeds have to be dispersed to many places.
• This is the reason why different plants are found in one regions and one plant is found in different regions.

Question 16.
How does coconut adapt for flowing through water?

Answer:
Adaptations of coconut for flowing through water are:

• Even if it remains in the water for a few days it will not rot.
• It will float in the water as the husk is filled with air.

Question 17.
What could be the reason behind appooppan thadi (milkweed pappus) is flying in the wind? Look at the picture and find out.

Answer:
Milkweed seeds are dispersed through the wind. The seeds dispersed by wind are light weight, small and made out of soft material so that they can be dispersed over long distances.

Question 18.
What are the fruits around you that animals and birds eat? What are the features of these fruits for attracting birds?
Answer:
Features of fruits for attracting birds are:

• Fleshy parts
• Bright coloured skin
• Sweet taste
• Attractive smell

Question 19.
Have you noticed that some non-edible fruits have parts that help them stick to other things? How do these adaptations help in seed dispersal?

Answer:
Seeds have a sticky outer layer that allows them to adhere to animals or birds. By attaching the animals, seeds can be transported far from the parent plant. This increases the chances of finding a suitable habitat for germination and reduces competition between the seedling and the parent plant.

Question 20.
What plants do you know that hurst and release seeds when they ripen?
Answer:

Question 21.
Observe your surroundings, find out the methods of seed dispersal in different plants, and write them down.
Answer:

Answer:
1. Through wind

• Milkweed pappus
• Cotton
• Orchid

2. By Bursting

• Lady’s finger
• Kas hithumba
• Rubber
• Pulses

3. Through water

• Coconut tree
• Palm tree
• Mango tree

4. Through animals

• Guava
• Rambutan
• Date palm
• Sunflower

Question 22.
What are the other uses of seeds?
Answer:
Uses of seeds:

• Seeds like rice, wheat, corn, beans, and nuts are major food sources for people around the world.
• Seeds are also used to feed animals. For example, sunflower seeds and corn are common in bird feed.
• Mustard seeds, cumin seeds, and coriander seeds are used as spices that add flavour to food.
• Seeds like sunflowers, sesame, and canola are pressed to make cooking oils.
• Seeds are used to grow beautiful flowers and plants for gardens and landscaping.

Question 23.
Make various handicrafts using seeds and display them in the class.
Answer:

Question 24.
Observe the surroundings and find leaves with these two kinds of venations and write the names of the plants.

Answer:

Reticulate Venation	Parallel Venation
Mango tree Rose plant Hibiscus Papaya	Plantain Coconut tree Wheat Paddy Corn

Question 25.
Is there any relationship between the venation of leaves and the structure of their roots?
Answer:
Yes. Plants with reticulate venation possess taproot systems and plants with parallel venation possess fibrous root systems.

Question 26.
Examine and draw the pictures of the roots of a plant with reticulate venation and a plant with parallel venation.
Answer:
Here are the pictures of plants having reticulate venation and parallel venation, respectively. Try to draw the picture of their roots in your science diary.

Question 27.
Compare the pictures you drew with the picture below.

What is special about the root of the jackfruit tree? How is the root of the grass plant different from the root of the jackfruit tree? Don’t you see a large root growing down from the stem in the root system of the jackfruit tree? Is there a large main root in the root system of the grass plant?
Answer:
We can see that there is a main root for the jackfruit tree from which the other small roots are growing. This root is the tap root. The roots of the grass plant are entirely different from the roots of the jackfruit tree. There is no main root from which the small roots are growing for the grass plant.

A taproot system ¡s a root system consisting of a taproot growing downwards from the base of the stem and branching roots growing from it. You can sec the taproot system in mango trees and jackfruit trees. Fibrous root system is one in which many fibre-like roots grow from the base of the stem. Plants belonging to the grass family have a fibrous root system.

Question 28.
Examine the leaves of the plants in your surroundings and list the venation and the root system.

Plant	Venation	Root system
Green gram
Grass
Jack fruit
Coconut tree

Answer:

Plant	Venation	Root system
Green gram	Reticulate venation	Taproot system
Grass	Parallel venation	Fibrous root system
Jack fruit	Reticulate venation	Taproot system
Coconut tree	Parallel venation	Fibrous root system
Rose plant	Reticulate venation	Taproot system
Bamboo	Parallel venation	Fibrous root system
Hibiscus	Reticulate venation	Taproot system
Paddy	Parallel venation	Fibrous root system
Plantain	Parallel venation	Fibrous root system
Com	Parallel venation	Fibrous root system
Arecanut tree	Parallel venation	Fibrous root system
Papaya	Reticulate venation	Taproot system

Question 29.
Find out the relationship between the venation and the root system.
Answer:
Plants with reticulate venation have tap roots, while plants with parallel venation have fibrous roots.

Other types of roots
Most roots grow from the radicle, but some grow from stems, branches, and other parts of the plant. They are clinging root, prop root, and stilt root. In mangroves, you can find a type of root called pneumatophores. These roots’ tips stick out of the ground and into the air. They are known as breathing roots as they help in the exchange of gases.

Question 30.
Observe the pictures and write the differences in root, Ieat stem, and number of colyledons in group 1 and of group 2.


Answer:

Plant part	Group -1	Group – 2
Root	Fibrous root	Taproot
Stem	Un-Branched	Branched
Leaf	Parallel venation	Reticulate venation
Number of cotyledons	One cotyledon	Two cotyledons

Question 31.
Plants shown in the figure (group-1) have only one cotyledon. Such plants are called monocot plants. What can we call plants with two cotyledons?
Answer:
Plants with two cotyledons are called dicot plants.
Monocot plants are plants that have only one cotyledon. Fibrous roots, unbranched stems and leaves with parallel venation are the characteristics of monocot plants. Plants with two cotyledons are called dicot plants. Dicot plants are characterised by a taproot system, leaves with reticulate venation, along with branched stems.

Question 32.
We can see some plants in our surroundings which do not show any such relationship between root and leaf. Taro and yam are examples. Find more examples.
Answer:
Sweet potato, potato, ginger, dandelion, and radish are examples of plants that do not show any relationship between root and leaf.

Question 33.
Look at the pictures of plants that used to be present in many areas and are now decreasing in number.

Which plants are ¡n decline in your locality like this? Make a list of such plants.
Answer:
Plants that are in decline in our locality are:

• Ashogam
• Anjili
• Chandhanam
• Chakkarakolli
• Sarpagandhi
• Koovalam
• Kadukka

Extinction is the reduction in the population of an organism and its disappearance from the earth. A major reason for this is the destruction of the natural habitat of the organism. To save organisms from extinction, their natural habitats must be protected.

Basic Science Class 5 Chapter 4 Seeds of Life Question Answer Notes

Question 1.
Which of the following is not required for seed germination?
a) Water
b) Air
c) Temperature
d) Sunlight
Answer:
d) Sunlight

Question 2.
Which of the following is essential for seed germination?
a) Water
b) Air
c) Temperature
d) Sunlight
Answer:
a) Water

Question 3.
The characteristics of a plant fruit are given.

• The fleshy part
• Smells good
• Attractive colour

Question 4.
What is the benefit to this plant by having these characteristics?
Answer:
These characteristics are the result of plants that are seed-dispersed by other organisms (birds, bats, etc.). These characteristics are helpful in attracting creatures.

Question 5.
Find the relation and fill in the missing part.
a) Niango tree: Reticulate venation
Bamboo : ……………..
b) Tulsi : Taproot system
Paddy : ……………..
Answer:
a) Parallel venation
b) Fibrous root system

Question 6.
Classify the plants given below into taproot systems and fibrous root systems.
Coconut tree, Bamboo, Papaya, Mango tree, Guava tree, Paddy, Hibiscus, Plantain

Plants having taproot system	Plants having fibrous root system

Answer:

Plants having taproot system	Plants having fibrous root system
Mango tree	Coconut tree
Guava tree	Bamboo
Papaya	Paddy
Hibiscus	Plantain

Question 7.
Find the relation and till in the missing part.
Coconut tree: Monocot plant
Jackfruit tree:……………
Answer:
Dicot plant

Question 8.
What are monocot plants?
Answer:
Monocot plants are plants that have only one cotyledon.
Fibrous roots. Unbranched stems and leaves with parallel venation are the characteristics of monocot plants.

Question 9.
What are dicot plants?
Answer:
Plants with two cotyledons are called dicot plants.
Dicot plants are charactensed by a taproot system, leaves with reticulate venation, along with branched stems.

Question 10.
What are the peculiarities of seeds that are dispersed through water?
Answer:
Peculiarities of seeds that are dispersed through water:

• They can float on water.
• They don’t decay even when they are in water for a few days.
• Fruits like coconut have a fibrous covering that contains air spaces.

Question 11.
How is seed dispersal by birds happening?
Answer:
In mango, guava, etc the fleshy part of the fruits is eaten by birds. The attractive colour and smell of fleshy fruits attract animals. Their seeds are also seen sprouting on the ground.

Question 12.
How does the seed dispersal take place in pappus?
Answer:
By floating in the air.

Question 13.
What are the peculiarities that help pappus to fly freely in the wind?
Answer:
The seeds of pappus use soft hair-like portions for floating in the air and for dispersal of seeds through it.

Question 14.
What are the different types of seed dispersal?
Answer:
Methods of seed dispersal:

• Through water
• By bursting
• By wind
• Through birds
• Through animals

Question 15.
Why dispersal of seeds is necessary?
Answer:
If all the seeds of a plant germinate at the base of the plant itselt they may not get sufficient soil, water, sunlight or mineral salts for their growth.

Question 16.
Aren’t there plants that produce new ones front other parts of the plant? Give some examples too.
Answer:
The other parts of the plant which produce new ones are:

• Stem: Pepper. Betel vine
• Leaves: Bryophyllum, Nilappana
• Root: Sandalwood tree, Beal
• Underground stem: Crape Jasmine. Sugar cane

Question 17.
Where does the plant get its food before photosynthesis begins?
Answer:
The germinating seed uses the food of the cotyledon until the leaves grow enough to synthesise food.

Question 18.
What is the first thing that comes out of a seed when it germinates?
Answer:
Radicle

Question 19.
What is the part that grows upward from the embryo?
Answer:
Plumule

Question 20.
The plumule grows into the stem.” Is it true or false?
Answer:
True

Question 21.
Is soil required for the germination of seeds?
Answer:
No

Question 22.
Water is required for he germination of seeds. Is it true or false?
Answer:
True

Question 13.
Do you think sunlight is necessary for the germination of seeds?
Answer:
No, Sunlight is not necessary.

Question 24
……….(a)……… and …………(b)……… are required for growth after sprouting.
Answer:
(a) Sunlight
(b) soil

Question 25.
The process of the embryo inside the seed growing into a seedling under favourable circumstances is known as ………………
Answer:
Germination

Question 26.
What are the factors required for seed germination?
Answer:
Air, water and favourable temperature.

Question 27.
Find out whether the given statements are true or false.
i. Plants without seeds also propagate.
ii. Only seeds that reach the soil will sprout.
iii. Man also facilitates seed dispersal.
iv. When a seed germinates the part that comes out first is the root.
v. Seeds dispersed through wind will have fleshy parts.
vi. Sunlight is not essential for seed germination.
Answer:
i. True
ii. False
iii. True
iv. False
y. False
vi. True

Question 28.
Rarnesh said that the seed of hid’s finger, if sown too deep, will not sprout. Do you agree with this opinion? Why?
Answer:
Surely. I agree with this opinion. Germination occurs as a result of the rapid growth of the embryo. This needs a large amount of energy. This energy is obtained through respiration and more oxygen is needed for it. But deep in the soil oxygen is lacking. For this reason seeds sown deep in the soil do not germinate as they do not get enough oxygen.

Question 29.
The process by which the embryo of the seed grows into a plant is known as ……………
Answer:
Germination

Question 30.
Classify the following as monocot plants and dicot Plants
Coconut, mango, jackfruit. arecanut, wheat, guava tree, sapota
Answer:

Monocot plants	Dicot plants
Coconut	Mango
Arecanut	Jackfruit
Wheat	Guava
	Sapota

Answer:

Monocot plants	Dicot plants
Hibiscus	Bamboo
Tulsi	Rice
Mango	Banana
Guava	Coconut

Seeds of Life Class 6 Notes

Have you ever wondered how a tiny seed can grow into a big, beautiful plant? In this chapter, we will explore the amazing journey of seeds and how they become plants. Seeds are like little packages of life. holding everything a new plant needs to start growing. We will learn about the different parts of a seed, what it needs to grow, and the wonderful process called germination. Get ready to discover the secrets of seeds and how they bring life to our world.

Seed

• A seed is a structure that carries a baby plant inside.
• Germination is the process of sprouting of seeds to form a new plant.
• Water air, and suitable temperature are the necessary factors for seed germination.

Venation in leaves

• The arrangement of veins and veinlets in the leaf is called venation.
• Two types of venation exist in leaves: reticulate venation and parallel venation

Monocot plants

• Cotyledons are the covering seen in seeds that later develop as first leaf during germination.
• Monocot plants have one cotyledon.

Dicot plants

• Dicot plants possess two cotyledons.
• Seed carries embryo which is the future plant.
• The process of sprouting of seeds is called germination. Water and suitable temperature are the necessary factors for seed germination.
• Radicles arise first from the seed during germination and grow downward to develop into the root system of the plant: Later plumules arise and become the stem of the plant.
• Reserved food for embryo in seeds is called endosperm. It is seen beneath the cotyledon.
• Plants can be propagated from parts other than seeds. such as stem in roses, root in asparagus, and leaf in podophyllum.
• The process of transportation of seeds away from the parent plant is called seed dispersal. Agents helping in seed dispersal are animals, birds, water, air etc.

• Structures that supply water and food in leaves are called veins, and their arrangement is called venation.
• In plants, there are two types of venation: reticulate venation and parallel venation.
• Reticulate venation, small veins arise from the large middle vein and spreads like a network. Example: Jackfruit, mango
• Parallel veination, veins runs parallel in a leaf without intersecting each other. Grasses generally exhibit parallel venation.
• Arrangement of root in plants can be of two types: taproot and fibrous root.
• A taproot system is a root system consisting of a main root growing downwards from the base of the stem and branching roots growing from it.
• Fibrous root system is one in which many fibre-like roots grow from the base of the stem.
• Monocot plants have one cotyledon and dicot plant have two cotyledons.