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

Write true or false. If false change the statement so that it is true.

Sternum is present on the ventral side of the body.

Write the difference between Pectoral and Pelvic girdle.

All mammals (except a few) have ______ cervical vertebra.

The number of phalanges in each limb of human is ______. 

______ and ______ pairs of ribs are called floating ribs.

The human cranium is made of ______ bones.

In an inflorescence where flowers are borne laterally in an acropetal succession, the position of the youngest floral bud in the floral axis shall be ______.

Are chemosynthetic bacteria-autotrophic or heterotrophic?

Holdfast, stipe and frond constitutes the plant body in case of ______.

Food is stored as Floridean starch in Rhodophyceae. Mannitol is the reserve food material of which group of algae?

Product of photosynthesis is transported from the leaves to various parts of the plants and stored in some cell before being utilised. What are the cells/ tissues that store them?

While eating peach or pear it is usually seen that some stone like structures get entangled in the teeth, what are these stone like structures called?

Below is a list of plant fibres. From which part of the plant these are obtained

Coir

Write the function of:

Collenchyma

Write the function of:

Aerenchyma

The following terms has some anatomical significance. What do these terms mean? Explain with the help of line diagrams.

Secondary wall

Select one which is not true for ribosome.

Which one of these is not a eukaryote?

Which of the following features is common to prokaryotes and many eukaryotes?

Which of the following is not true of a eukaryotic cell?