What would be the number of chromosomes of the aleurone cells of a plant with 42
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells ?
Options
(a) 42 (b) 63 (c) 84 (d) 21
Correct […]
Easy
The length of different internodes in a culm of sugarcane is variable because of
The length of different internodes in a culm of sugarcane is variable because of
Options
(a) shoot apical meristem (b) position of axillary buds (c) size of leaf lamina at the node below […]
The first movements of the foetus and appearance of hair on its head are usually
The first movements of the foetus and appearance of hair on its head are usually observed during which mouth of pregnancy?
Options
(a) Fourth month (b) Fifth month (c) Sixth month (d) Third […]
Plants with ovaries having only one or a few ovules, are generally pollinated by
Plants with ovaries having only one or a few ovules, are generally pollinated by
Options
(a) bees (b) butterflies (c) birds (d) wind
Correct Answer:
wind
Explanation:
Wind pollinated flowers have generally single […]
The supportive skeletal structures in the human external ears and in the nose tip
The supportive skeletal structures in the human external ears and in the nose tip are examples of
Options
(a) ligament (b) areolar tissue (c) bone (d) cartilage
Correct Answer:
cartilage
Explanation:
Cartilage is […]
The process by which organisms with different evolutionary history evolve similar
The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called
Options
(a) Convergent evolution (b) Non-random evolution (c) Adaptive radiation (d) […]
The breakdown of detritus into smaller particles by earthworm is a process called
The breakdown of detritus into smaller particles by earthworm is a process called
Options
(a) humification (b) fragmentation (c) mineralisation (d) catabolism
Correct Answer:
fragmentation
Explanation:
The break down of detritus into smaller […]
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of:
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of:
Options
(a) mesophytes (b) epiphytes (c) hydrophytes (d) xerophytes
Correct Answer:
hydrophytes
Explanation:
Reduction in vascular tissue, mechanical tissue and cuticle is […]
If a live earthworm is pricked with a needle on it outer surface without damaging
If a live earthworm is pricked with a needle on it outer surface without damaging its gut, the fluid that comes out is:
Options
(a) coelomic fluid (b) haemolymph (c) slimy mucus (d) […]
Consumption of which one of the following foods can prevent the kind of blindness
Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin ‘A’ deficiency?
Options
(a) Flaver Savr’ tomato (b) Canolla (c) Golden rice (d) Bt-Brinjal
Correct Answer: […]