Science (English Medium) कक्षा ११ - CBSE Question Bank Solutions for Biology

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 ______.

The enzyme that is not found in a C₃ plant is ______.

When CO₂ is added to PEP, the first stable product synthesised is ______.

Can girdling experiments be done in monocots? If yes, How? If no, why not?

Some of these terms/chemicals are associated with the C₄ cycle. Explain.

Hatch slack pathway

Some of these terms/chemicals are associated with the C₄ cycle. Explain.

Calvin cycle

Some of these terms/chemicals are associated with the C₄ cycle. Explain.

PEP carboxylase

Some of these terms/chemicals are associated with the C₄ cycle. Explain.

Bundle sheath cells

Succulents are known to keep their stomata closed during the day to check transpiration. How do they meet their photosynthetic CO₂ requirements?

In what kind of plants do you come across ‘Kranz’ anatomy? To which conditions are those plants better adapted? How are these plants better adapted than the plants which lack this anatomy?