Free Biological Classification (Daily Quiz: 15) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Biological Classification (Daily Quiz: 15) Time:

Question-1

In which of the following animals dimorphic nucleus is found?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Dimorphic nucleus means two types of nuclei are present in P. caudatum – large macronucleus and small micronucleus. The macronucleus is roughly kidney-shaped and with inconspicuous nuclear membrane. Macronucleus is the somatic or vegetative nucleus and controls the day-to-day metabolic activities of the cell. The micronucleus is lodged in a depression on the surface of the macronucleus. It is usually spherical, with a nuclear membrane and with diploid number of chromosomes. It controls the reproductive activities of the organism. Amoeba, Trypanosoma and Plasmodium have only one nucleus.


Question-2

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the Kingdom

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Protista is a kingdom of unicellular eukaryotic organisms. It includes photosynthetic protists (dinoflagellates, chrysophytes and euglenoids), consumer-decomposer protists (slime moulds) and protozoan protists.


Question-3

Select the wrong statement.

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Diatoms are marine or freshwater unicellular organisms which have cell walls (frustules) composed of pectin impregnated with silica and consisting of two halves, one overlapping the other. The siliceous frustules of diatoms do not decay easily.


Question-4

Which one of the following is wrong for fungi?

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Cell wall in fungi is composed of chitin, a polysaccharide comprising N-acetyl-D-glucosamine (a derivative of glucose).


Question-5

Which one of the following is not true about lichens?

(a)

(b)

(c)

(d)


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