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

Permanent tissues develop from :

Filtration of the blood takes place at ______. 

In a given habitat we have 20 plant species and 20 animal species. Should we call this as ‘diversity’ or ‘biodiversity’? Justify your answer.

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.

Rearrange the following zones as seen in the root in vertical section and choose the correct option.

1. Root hair zone
2. Zone of meristems
3. Rootcap zone
4. Zone of maturation
5. Zone of elongation

Roots developed from parts of the plant other than radicle are called ______.

Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of O₂, root growth is restricted or completely stopped. How do the plants growing in marshlands or swamps obtain their O2 required for root respiration?

In swampy areas like the Sunderbans in West Bengal, plants bear special kind of roots called ______.

In aquatic plants like Pistia and Eichhornia, leaves and roots are found near ______.

Name the body part modified for food storage in the following:

Carrot ______.

Name the body part modified for food storage in the following:

Sweet potato ______.

Name the body part modified for food storage in the following:

Asparagus ______.

Name the body part modified for food storage in the following:

Radish ______.

Name the body part modified for food storage in the following:

Dahlia ______.

Name the body part modified for food storage in the following:

Portulaca ______.

Give two examples of roots that develop from different parts of the angiospermic plant other than the radicle.

The essential functions of roots are anchorage and absorption of water and minerals in the terrestrial plant. What functions are associated with the roots of aquatic plants. How are roots of aquatic plants and terrestrial plants different?

Rhizome of ginger is like the roots of other plants that grows underground. Despite this fact ginger is a stem and not a root. Justify.

Which one of the following types of cell is involved in making of the inner walls of blood vessels?

Name the different cell junctions found in tissues.