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MOST IMPORTANT general science mcq - 6 EXERCISES
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The following question based on physiology of plants, humans and animals topic of general science mcq
- Arthropoda
- Mollusca
- Annelida
- Coelenterata
(a) 1 and 3
(b) 3 and 4
(c) 1 and 2
(d) 2 and 4
The correct answers to the above question in:
Answer: (c)
Body fluids do not require specialized vessels , but flow openly in body cavity.
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Question : 1
Which of the following cells is responsible for myelin formation in the peripheral nervous system?
a) Schwann cell
b) Oligodendrocyte
c) Astrocyte
d) Microglial cell
Answer »Answer: (a)
Schwann cells form concentric rings around neurons
Question : 2
Which one is not a reflex action?
a) Release of saliva on seeing sweets
b) Closing of eye lids against fricking
c) Perspiration due to heat
d) Obeying the order to run
Answer »Answer: (c)
Reflex action is the immediate involuntary response to a stimulus. It includes sudden action of body parts due to heat stimulus, burn stimulus, pricking, sneezing, coughing yawning, etc. Perspiration is not a reflex action.
It is also known as sweating. Sweating is the loss of water from the sweat glands of the skin. Sweat includes some salts and urea. It's for temperature regulation.
Question : 3
Consider the following statements:
- Flowering plants are grouped under phanerogams.
- Non-flowering plants are grouped in cryptogams.
a) 1 and 2
b) 1 only
c) 2 only
d) None
Answer »Answer: (a)
All flowering plants are grouped under phanerogams while non-flowering into cryptogams
Question : 4
Which of the following would not have an effect on flowering of a particular plant species?
a) Nutritional status
b) Temperature
c) Plant age
d) Prevailing wind
Answer »Answer: (d)
Question : 5
A surge of which hormone stimulates ovulation in human females?
a) Estrogen
b) Luteinizing hormone
c) Follicle stimulating hormone
d) Progesterone
Answer »Answer: (b)
Question : 6
Which among the following have scales?
- Amphibians
- Pisce
- Reptiles
- Mammals
a) 2 and 3
b) 3 and 4
c) 1 and 3
d) 1 and 2
Answer »Answer: (a)
Amphibians can live in aquatic as well as terrestrial habitats. The Amphibian skin is moist (without scales). The skin of Mammals is unique in possessing hair.
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