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? 
Important Questions on National Science Olympiad (NSO) Questions
Plant X depends partly on animals for food but can also make its own food while plant Y cannot make its own food.
Plant X has chlorophyll while plant Y does not contain chlorophyll and is non-green.
In plant X, food is prepared by the green stem, whereas plant Y obtains its food from dead and decaying plants and animals.
Plant X and plant Y have patches of green colour. The only green part of their leaves performs photosynthesis.
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() |
How many times has the nymph moulted?
Study the given graph carefully.
The line QR shows the _____ stage of the mosquito.
- Long eyelashes and narrow nostrils
- Wide padded feet
- Thick rubbery lips
- Thick leathery patches on the knee
Which of these animals is 'X'?
1. Dry conditions
2. Cool conditions
3. Moist conditions
4. Warm conditions
- It lays eggs
- It possesses lungs
- It has scaly skin
Ajay filled a bottle up to the rim with water and placed it in the freezer. What he saw after a few hours is shown in the figure given here. What does it show?
