EASY
4th CBSE
IMPORTANT
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The food prepared by the leaves is used by the plants for their daily activities. The excess food gets stored as starch in _____. 

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Important Questions on National Science Olympiad (NSO) Questions

EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 6
Shruti sets up an experiment, as shown in the figure. What is she trying to find out? 

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EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 7
Refer to the given figure. Which of the following cannot be X?
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EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 8
Beena took a croton plant with shaded leaves and set up an experiment as shown here. After that, she kept the plant in darkness for a few hours and then placed it in sunlight. After 6 hours, she performed the iodine test on plucked leaves P, Q and R. Which of the following is the possible outcome?
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MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 9

The given flow chart can be used to distinguish between some types of flowering plants. What do M and N represent in the flow chart? Question Image  

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 10
Which of the following statements hold true regarding the given plants X and Y? 
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1. Plant X depends partly on animals for food but can also make its own food while plant Y cannot make its own food. 
2. Plant X has chlorophyll while plant Y does not contain chlorophyll and is non-green. 
3. In plant X, food is prepared by the green stem, whereas plant Y obtains its food from dead and decaying plants and animals. 
4. Plant X and plant Y have patches of green colour. The only green part of their leaves performs photosynthesis.
EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 11

The egg of cockroach hatches into a young cockroach, known as a nymph. It does not have wings and undergoes moulting several times because moulting allows it to grow in size to become an adult cockroach. Refer to the given table of the growth of a cockroach nymph and answer the question that follows: 

Week Length(cm)
2 2.0
4 2.5
6 3.0
8 3.5
10 4.0
12 4.5
14 5.0
16 5.5

How many times has the nymph moulted?

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 12

Study the given graph carefully. 
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The line QR shows the _____ stage of the mosquito.   

EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE FOR SMARTER LIFE,>Chapter 16 - National Science Olympiad (NSO) Questions>National Science Olympiad (NSO) Questions>Q 13
Animal 'X' has the following characteristic features: 
  • Long eyelashes and narrow nostrils 
  • Wide padded feet 
  • Thick rubbery lips
  • Thick leathery patches on the knee 

Which of these animals is 'X'?