Why are the classification systems changing every now and then?

3

(a)

What different criteria would you choose to classify people that you meet often?

3

(a)

Define a taxon. Give some examples of taxa at different hierarchical levels.

3

(a)

What are the obligate categories? How these are different from intermediate categories. List out some intermediate categories.

3

(a)

In which fields taxonomical aids are helpful? Why taxonomic aids are used in these studies? Which different taxonomical aids are used by the biologists?

3

(a)

Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things, but surely living reactions.Comment.

3

(a)

Amoeba is a living matter and a sand particle is non-living matter.Explain.

3

(a)

How do you prepare your own herbarium sheets? What are different tools you carry with you while, collecting plants for the preparation of a herbarium? What information should a preserved plant material on the herbarium sheet provide for taxonomic studies?

3

(a)

What precautions must you observe while in a zoological museum?

3

(a)

Write the relation between taxonomic category and taxonomic hierarchy.Fill in the missing category in following hierarchical arrangement in ascending order.

3

(a)

Write short notes on following: Phylum, Order, Genus and Species.

3

(a)

How is botanical garden useful for scientists?

3

(a)

Write a brief note on three domains of life.

3

(a)

Find five characteristics each in orange and lemon to establish that they belong to the same family.

3

(a)

Write five characters which make you think that cockroaches and mentis belong to same Phylum.

3

(a)