NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM PROTISTA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which phylum contains both a macro-and a micro-nucleus?
A
Ciliophora
B
sarcodina
C
Sporozoa
D
Phaeophyta
Explanation: 

Detailed explanation-1: -Ciliates contain two types of nuclei: a micronucleus and a macronucleus.

Detailed explanation-2: -A macronucleus is the larger nucleus whereas the micronucleus is the smaller nucleus. Apart from their relative sizes, the micronucleus and the macronucleus differ based on their genetic features. The micronucleus is a diploid nucleus whereas the macronucleus is a polypoloid nucleus.

Detailed explanation-3: -Ciliophora is the name for a phylum of protists commonly called the ciliates. Ciliates are the most complex of cells, having an elaborate cytoskeleton, cilia and two different kinds of nuclei. Free-living ciliates can be found in almost any habitat that has water – in soils, hot springs and Antarctic sea ice.

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