Little Flower Children School, kiriharapur Ballia
Online Test (Session-20-21)
Class-4th Subject-Science Marks-20
Q.1.Choose the correct option- (3)
1.Leaves are green in colour due to the presence
of ______.
(a) Stomach (b) chlorophyll ( c) carbon dioxide
2.The part of a leaf attaches it to the stem is___.
(a) Midrib (b)blade ( c)petiole
3.Which of the following is a xerophyte ______.
(a) Cactus (b) Teak ( c) Palm
Q.2. State whether these statement true Or false-
(3)
1.Waterlily is a floating plant.
2.Sunlight gives the energy to make food.
3.Animals depends on plants for food only.
Q.3. Name the following - (3)
1.The pigment that helps in absorbing sunlight.
2.A gas which is the product photosynthesis.
3.Plants that absorb food from dead plants and
animals.
Q.4. Answer these questions- (6)
1. What is photosynthesis?
2. What is food chain? Give your own example of
a food chain.
3.What is adaptation?
Q.5. Fill in the blanks- (3)
1.Arrowhead is an example of _____ plant.
(Floating/emergent)
2. The flat part of a leaf is called_____.
(Vein/leaf blade)
3. Chlorophyll gives ______ colur to the plant.
(White/green)
Q.6. Draw a labelled diagram of a 'Leaf'.
Answers
Answer:
1:-(B)
2-(a)
3:-(c)
Explanation:
I hope you write carefully and all the best for your exam
Answer:
Q.1 1. (b)
2.(C)
3.(a)
Q.2
1. True
2.true
3.false
Q.3
1.Chlorophyll
2.Oxygen
3. Saprophytes
Q.4
1.Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities.
2.A food chain is a linear network of links in a food web starting from producer organisms and ending at apex predator species, detritivores, or decomposer species. eg. Next come organisms that eat the autotrophs; these organisms are called herbivores or primary consumers -- an example is a rabbit that eats grass.
3. Adaptation is the evolutionary process where an organism becomes better suited to its habitat.
Q.5
1. Emergent
2. Leaf
3. Green
Q.6
