Science (English Medium) Class 11 - CBSE Question Bank Solutions

Which of the following is removed from our body by lungs?

What is the stomatal apparatus?

Draw the labelled diagram of the following:

Gram seed

Draw the labelled diagram of the following:

V.S. of maize seed

By looking at a plant externally can you tell whether a plant is C₃ or C₄? Why and how?

By looking at which internal structure of a plant can you tell whether a plant is C₃ or C₄? Explain.

RuBisCo is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCo carries out more carboxylation in C₄ plants?

Give a comparison between the following:

C₃ and C₄ pathways

Give comparison between the following:

Anatomy of leaf in C₃ and C₄ plants

Define RQ.

Terrestrial animals are generally either ureotelic or uricotelic, not ammonotelic, why?

Give a brief account of:  Mechanism of hearing

The mature seeds of plants such as gram and peas, possess no endosperm, because ______.

How do you distinguish between hypogeal germination and epigeal germination? What is the role of cotyledon (s) and the endosperm in the germination of seeds?

Identify the sex of a frog in which sound producing vocal sacs are present.

Give two identifying features of an adult male frog.

Frog is a poikilotherm, exhibits camouflage and undergoes aestivation and hibernation, how are all these beneficial to it?

Write the functions in brief in column B, appropriate to the structures given in column A.

Comment on the statement “living state is a non-equilibrium steady- state to be able to perform work”.

PEP is primary CO₂ acceptor in ______.