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

Is Pinus an evergreen tree? Comment.

Distinguish between the following:

Interfasicular cambium and intrafasicular cambium

What is the basis for designating C₃ and C₄ pathways of photosynthesis?

Cork cambium forms tissues that form the cork. Do you agree with this statement? Explain.

What is periderm? How does periderm formation take place in dicot stem?

The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reproductive structures of angiosperms.

Interfascicular cambium and cork cambium are formed due to ______.

Phellogen and Phellem respectively denote ______.

When we peel the skin of a potato tuber, we remove ______.

Give one basic functional difference between phellogen and phelloderm.

Arrange the following in the sequence you would find them in a plant starting from the periphery – phellem, phellogen, phelloderm.

If one debarks a tree, what parts of the plant is being removed?

What is the commercial source of cork? How is it formed in the plant?

What is the difference between lenticels and stomata?

The form of sugar transported through phloem is ______.

In a plant, tranalocation in xylem is unidirectional while in phloem it is bidirectional. Explain.

If one wants to find minerals and in the form they are mobilised in the plant, how will an analysis of the exudate help?

What is the chemical composition of xylem and phloem sap?

When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Both gymnosperms and angiosperms bear seeds, then why are they classified separately?