Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions

Define a cardiac output.

Explain the heart sounds.

Describe the role of the skin in excretion.

Name the type of joint between the following:

Between pubic bones in the pelvic girdle

Which one of the following options is INCORRECT? 

A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to ______.

Protonema is ______.

The plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants?

In Bryophytes male and female sex organs are called ______ and ______.

Why are bryophytes called the amphibians of the plant kingdom?

Draw labelled diagrams of

1. Female and male thallus of a liverwort.
2. Gametophyte and sporophyte of Funaria.
3. Alternation of generation in Angiosperm.

A vessel less piece of stem possessing prominent sieve tubes would belong to ______.

What do hard wood and soft wood stand for?

What are the characteristic differences found in the vascular tissue of gymnosperms and angiosperms?

Write the function of:

Sieve tube

Distinguish between the following:

Protoxylem and metaxylem

Setae help in locomotion in earthworm but are not uniformly present in all the segments. They are present in ______.

State the number of segments in earthworm which are covered by a prominent dark band or clitellum.

What is the scientific term given to earthworm’s body segments?

How do you distinguish between dorsal and ventral surface of the body of earthworm.