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) alleles
(b) homologous pairs
(c) dominant and recessive
(d) determinants
The correct answers to the above question in:
Answer: (a)
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
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 : 2
Consider the following statements :
- A colourblind person cannot distinguish between red and green.
- Colour blindness is related with a defect in cone cells.
a) 1 and 2
b) 2 only
c) 1 only
d) None
Answer »Answer: (a)
In colour blindness there is no actual blindness but there is a deficiency of colour vision. The most usual cause is a fault in the development of one or more sets of retinal cones that perceive colour in light and transmit that information to the optic nerve.
Question : 3
Binomial Nomenclature was given by
a) Carolus Linneaus
b) Lamarck
c) Ernst Mayr
d) Cuvier
Answer »Answer: (a)
Question : 4
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 : 5
In class of Amphibia, respiration occurs through
a) skin
b) gills
c) lungs
d) All of these
Answer »Answer: (d)
Question : 6
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.
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