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All questions of Plants for Primary 3 Exam
Which of the following provides water and mineral salts to the plant?
- a)Stem
- b)Flowers
- c)Fruits
- d)Roots
Correct answer is option 'D'. Can you explain this answer?
Which of the following provides water and mineral salts to the plant?
a)
Stem
b)
Flowers
c)
Fruits
d)
Roots
|
Pranav Singh answered |
Roots are the part of the plant that is in the soil. They take in water and important nutrients, called mineral salts, from the soil. The roots then send this water and nutrients up through the plant to help it grow and stay healthy. Without roots, the plant wouldn't get the food and water it needs.
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At which of the following time may a plant be preparing food?- a)6 a.m.
- b)10 a.m.
- c)10 p.m.
- d)midnight
Correct answer is option 'B'. Can you explain this answer?
At which of the following time may a plant be preparing food?
a)
6 a.m.
b)
10 a.m.
c)
10 p.m.
d)
midnight
|
|
Pranav Singh answered |
Plants can get sunlight at 10 AM among the given options A, B, C and D. So, that is the time when they will be able to prepare food.
Name the green colouring substance that is present in leaves?- a)Carotene
- b)Salts
- c)Chlorophyll
- d)All of these
Correct answer is option 'C'. Can you explain this answer?
Name the green colouring substance that is present in leaves?
a)
Carotene
b)
Salts
c)
Chlorophyll
d)
All of these
|
Rhea Reddy answered |
Chlorophyll is a pigment that gives plants their green color, and it helps plants create their own food through photosynthesis.
The main purpose of plant's flowers is:- a)provide support
- b)provide water
- c)produce seeds
- d)produce food
Correct answer is option 'C'. Can you explain this answer?
The main purpose of plant's flowers is:
a)
provide support
b)
provide water
c)
produce seeds
d)
produce food
|
Anjali Gupta answered |
Produce seeds because when the fertility completes it's process it mostly became a fruit and in that fruit there is seeds of that plant.
Which of the following is NOT needed for photosynthesis?- a)Iodine solution
- b)Carbon dioxide
- c)Chlorophyll
- d)Water
Correct answer is option 'A'. Can you explain this answer?
Which of the following is NOT needed for photosynthesis?
a)
Iodine solution
b)
Carbon dioxide
c)
Chlorophyll
d)
Water
|
|
Pranav Singh answered |
- Water, carbon dioxide, air and sunlight are required for the photosynthesis.
- Iodine is not needed.
The tiny pores present on the leaves of plants are called:- a)stomata
- b)cells
- c)chlorophyll
- d)grains
Correct answer is option 'A'. Can you explain this answer?
The tiny pores present on the leaves of plants are called:
a)
stomata
b)
cells
c)
chlorophyll
d)
grains
|
|
Anjali Gupta answered |
Stomate, also called stoma, plural stomata or stomas, any of the microscopic openings or pores in the epidermis of leaves and young stems.
Veins:- a)absorb water and minerals from the soil
- b)absorb carbon dioxide from the atmosphere
- c)transport water, food and minerals in a leaf
- d)release oxygen and carbon dioxide into the atmosphere
Correct answer is option 'C'. Can you explain this answer?
Veins:
a)
absorb water and minerals from the soil
b)
absorb carbon dioxide from the atmosphere
c)
transport water, food and minerals in a leaf
d)
release oxygen and carbon dioxide into the atmosphere
|
|
Rhea Reddy answered |
Veins are distributed all over the leaves in a network and transport food, water and minerals from one place to another.
Which of the following are called food factories of the plant?- a)Leaves
- b)Stem
- c)Roots
- d)Flowers
Correct answer is option 'A'. Can you explain this answer?
Which of the following are called food factories of the plant?
a)
Leaves
b)
Stem
c)
Roots
d)
Flowers
|
|
Anjali Gupta answered |
- The part of the plant which produces food is a leaf.
- Leaves prepare food by a process called photosynthesis.
- In this process, food is produced by utilizing water and carbon dioxide in the presence of sunlight.
Therefore, leaves are called the food factories of the plants.
Plants get carbon dioxide from the;- a)soil
- b)sand
- c)leaves
- d)air
Correct answer is option 'D'. Can you explain this answer?
Plants get carbon dioxide from the;
a)
soil
b)
sand
c)
leaves
d)
air
|
|
Pranav Singh answered |
- Plants absorb carbon dioxide through small openings called stomata that are on the surface of the leaf.
- If we zoom in on a plant leaf, so close that we can see the cells, we'll find tiny openings called stomata.
Which of the following stores food for the baby plant?- a)Leaf
- b)Seed
- c)Stem
- d)Roots
Correct answer is option 'B'. Can you explain this answer?
Which of the following stores food for the baby plant?
a)
Leaf
b)
Seed
c)
Stem
d)
Roots
|
|
Pranav Singh answered |
- Inside the seed there are is an embryo (the baby plant) and cotyledons.
The leaves of plants are green. The reason is:- a)they are born from green-coloured seeds
- b)photosynthesis occurs in the leaves
- c)the presence of a green pigment called chlorophyll
- d)due to the presence of network of veins
Correct answer is option 'C'. Can you explain this answer?
The leaves of plants are green. The reason is:
a)
they are born from green-coloured seeds
b)
photosynthesis occurs in the leaves
c)
the presence of a green pigment called chlorophyll
d)
due to the presence of network of veins
|
|
Anjali Gupta answered |
Leaves of plants are green because they contain the green pigment, chlorophyll. However, plants contain chromoplasts but they are not green pigments.
Plants store extra food in the form of:- a)oxygen
- b)carbon dioxide
- c)chlorophyll
- d)starch
Correct answer is option 'D'. Can you explain this answer?
Plants store extra food in the form of:
a)
oxygen
b)
carbon dioxide
c)
chlorophyll
d)
starch
|
|
Anjali Gupta answered |
Plants use some food for their growth and store the remaining in the form of starch.
Photosynthesis is:- a)transporting water and minerals
- b)carrying the prepared food
- c)preparation of food in leaves
- d)growing of flowers into seeds
Correct answer is option 'C'. Can you explain this answer?
Photosynthesis is:
a)
transporting water and minerals
b)
carrying the prepared food
c)
preparation of food in leaves
d)
growing of flowers into seeds
|
|
Pranav Singh answered |
The process by which leaves of green plants prepare their own food is called photosynthesis.
Huge trees like the mango tree, have what kind of roots?- a)Taproots
- b)Fibrous roots
- c)A mixture of tap and fibrous roots
- d)Aerial roots
Correct answer is option 'A'. Can you explain this answer?
Huge trees like the mango tree, have what kind of roots?
a)
Taproots
b)
Fibrous roots
c)
A mixture of tap and fibrous roots
d)
Aerial roots
|
|
Pranav Singh answered |
Belonging to the cashew family, the huge mango trees are also blessed with a deep taproot system.
Which of these will grow into a new plant?- a)A fallen leaf
- b)A fallen flower
- c)A fallen seed
- d)A buried flower petal
Correct answer is option 'C'. Can you explain this answer?
Which of these will grow into a new plant?
a)
A fallen leaf
b)
A fallen flower
c)
A fallen seed
d)
A buried flower petal
|
|
Rhea Reddy answered |
Seeds are what a plant uses to spread new plants into new places.
Which of the following parts of the plant lies under the ground?- a)Leaves
- b)Stem
- c)Flowers
- d)Roots
Correct answer is option 'D'. Can you explain this answer?
Which of the following parts of the plant lies under the ground?
a)
Leaves
b)
Stem
c)
Flowers
d)
Roots
|
|
Pranav Singh answered |
Root usually grows under the ground while shoot usually grows above the ground.
In fibrous roots:- a)small side roots grow from a main root
- b)number of roots grow from the end of stem
- c)parallel roots grow from the stem
- d)branches of the plant grow roots
Correct answer is option 'B'. Can you explain this answer?
In fibrous roots:
a)
small side roots grow from a main root
b)
number of roots grow from the end of stem
c)
parallel roots grow from the stem
d)
branches of the plant grow roots
|
|
Anjali Gupta answered |
In a fibrous root system, the roots grow downwards into the soil, and also branch off sideways throughout the soil.
In carrot, what part of the plant stores food?
- a)Leaves
- b)Stem
- c)Fruit
- d)Root
Correct answer is option 'D'. Can you explain this answer?
In carrot, what part of the plant stores food?
a)
Leaves
b)
Stem
c)
Fruit
d)
Root
|
|
Anjali Gupta answered |
- The carrot is a root vegetable, usually orange in colour, though purple, black, red, white, and yellow cultivars exist.
- It is a modified root, for storage.
The mushroom shown above gets its food:- a)from dead and decaying plants
- b)from photosynthesis
- c)by eating small insects which come near it
- d)from the water we pour near it
Correct answer is option 'A'. Can you explain this answer?
The mushroom shown above gets its food:
a)
from dead and decaying plants
b)
from photosynthesis
c)
by eating small insects which come near it
d)
from the water we pour near it
|
|
Pranav Singh answered |
- Mushroom is a non-green plant. Non-green plants do not have chlorophyll and cannot prepare food.
- Mushrooms obtain their food from dead and decaying plants and animals.
Chapter doubts & questions for Plants - Basic Science for Primary 3 2024 is part of Primary 3 exam preparation. The chapters have been prepared according to the Primary 3 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Primary 3 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Plants - Basic Science for Primary 3 in English & Hindi are available as part of Primary 3 exam.
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