set 4 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 5 EXERCISES
The following question based on genetics, evolution of life & ecological biodiversity topic of general science mcq
(a) skin
(b) gills
(c) lungs
(d) All of these
The correct answers to the above question in:
Answer: (d)
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
Consider the following statements :
- Human beings have 23 pairs of chromosomes.
- Sex chromosome in human male are named XY.
- Chromosomes are best seen in metaphase.
a) 1, 2 and 3
b) 2 and 3
c) 1 and 2
d) None
Answer »Answer: (d)
Humans have 46 chromosomes i.e., 23 pairs of chromosomes, of which 21 pairs are autosomes and 2 pairs are allosomes or sex chromosomes.
Human male sex chromosomes are named XY. During cell division, the chromosomes of every cell are most condensed are arrange themselves on the equatorial plane which makes them best visible.
Question : 2
The factors which represent the contrasting pairs of characters are called
a) alleles
b) homologous pairs
c) dominant and recessive
d) determinants
Answer »Answer: (a)
Question : 3
Which of the following groups of plants are propagated through underground root?
a) Pistia, Chrysanthemum and Pineapple
b) Bryophyllum and Kalanchoe
c) Ginger, Potato, Onion and Zamikand
d) Sweet potato, Asparagus, Tapioca and Dahlia
Answer »Answer: (d)
Question : 4
In which one of the following sets of animals do all the four give birth to young ones?
a) Kangaroo, Hedgehog, Dolphin, , Loris
b) Platypus, Penguin, Bat, Hippopotamus
c) Shrew, Bat, Cat, Kiwi
d) Lion, Bat, Whale, Ostrich
Answer »Answer: (a)
Penguin, kiwi & ostrich all belong to class Aves of chordata (i.e. birds) and they do not give birth to their young ones, they are oviparous while kangaroo, hedgehog, dolphin, loris all belong to class mammalia and are viviparous.
Question : 5
‘Archaeopteyrx’ is a connecting link between which of the following classes of animal?
a) Reptilia and Mammalia
b) Amphibia and Aves
c) Reptilia and Aves
d) Aves and Mammalia
Answer »Answer: (c)
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