Resource archive
Browse learning resources, explanations and study material.
Open any card to continue learning.
Question
If a population undergoes three generations, and if each generation consists of only males, what is the probability that females will be…
Question
Which of the following statements about self-pollination is correct? Self-pollination occurs within the same flower. New characters do not arise by self-pollination.…
Question
Among nitrobacter, rhizobium, nitrosomonas, nitrite bacteria, pseudomonas — which one is found in the fourth phase of the nitrogen cycle? (a) Rhizobium…
Question
The smallest unit of an ecosystem containing both biotic and abiotic factors is— (a) A green leaf (b) A flowering branch (c)…
Question
Which one of the following is the best example of convergent evolution and similarity due to it? (a) Wing structure of bat…
Question
Which of the following is not a characteristic of the waggle dance of honeybees? (a) The waggle dance is performed if the…
Question
Which biogas is not produced by the decomposition of dung and dead plants? (a) CH₄ (b) NH₃ (c) H₂S (d) H₂
Question
Write the names of two national parks of West Bengal.
Question
Write one function each of chromoplast and Golgi apparatus.
Question
Write the names of two non-nitrogenous waste products of plants.
