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

The taxonomic unit ‘Phylum’ in the classification of animals is equivalent to which hierarchical level in classification of plants.

Match the following and choose the correct option:

Linnaeus is considered as Father of Taxonomy. Name two other botanists known for their contribution to the field of plant taxonomy?

International Code of Botanical Nomenclature (ICBN) has provided a code for classification of plants. Give hierarchy of units of classification botanists follow while classifying plants and mention different ‘Suffixes’ used for the units.

What is the difference between flora, fauna and vegetation? Eichhornia crassipes is called as an exotic species while Rauwolfia serpentina is an endemic species in India. What do these terms exotic and endemic refer to?

Brinjal and potato belong to the same genus Solanum, but to two different species. What defines them as seperate species?

Define a taxon. What is meant by taxonomic hierarchy. Give a flow diagram from the lowest to highest category for a plant and an animal. What happens to the number of individuals and number of shared characters as we go up the taxonomical hierarchy?

‘Peat’ is an important source of domestic fuel in several countries. How is ‘peat’ formed in nature?

Give an example of plants with

1. Haplontic life cycle
2. Diplontic life cycle
3. Haplo- diplontic life cycle

Most algal genera show haplontic life style. Name an alga which is

1. Haplo-diplontic
2. Diplontic

Comment on the lifecycle and nature of a fern prothallus.

With the help of a schematic diagram describe the haplo-diplontic life cycle pattern of a plant group.

With the help of a schematic diagram describe the haplo-diplontic life cycle pattern of a plant group.

Venation is a term used to describe the pattern of arrangement of ______.

Endosperm, a product of double fertilization in angiosperms is absent in the seeds of ______.

Reticulate and parallel venation are characteristic of ______ and ______ respectively.

Draw diagrams of a typical monocot and dicot leaves to show their venation pattern.

Reticulate venation is found in dicot leaves while in monocot leaves venation is of parallel type. Mention one exception to this generalization.

You have heard about several insectivorous plants that feed on insects. Nepenthes or the pitcher plant is one such example, which usually grows in shallow water or in marsh lands. What part of the plant is modified into a ‘pitcher’? How does this modification help the plant for food even though it can photosynthesize like any other green plant?

Tendrils are found in the following plants. Identify whether they are stem tendrils or leaf tendrils.

Peas