The outermost and innermost wall layers of microsporangium in an anther are respectively:
a. Endothecium and tapetum
b. Epidermis and endodermis
c. Epidermis and middle layer
d. Epidermis and tapetum
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State any two characteristics of the tapetum, present in the microsporangium of an angiosperm.
Dense cytoplasm , with more than one nucleus damaged tapetum cannot nourish the developing pollen grains
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A ladder 15 m long leans against a wall making an angle of 60º with the wall.
This answer is wrong as cos 60 is applied instead of sin 60. Mere hisaab se sin 60 lagna chahiye.BHAG MADARCHOD.
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Consider the situation of the previous problem. Let the water push the left wall by a force F_1 and the right wall by a force F_2.
The correct answer is (b) F1 > F2. EXPLANATION: As the pressure depends on the depth of the liquid at rest, similarly in an accelerating liquid the pressure due to acceleration depends on the...
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In primary rainbow what is the order of colours observed from earth ? (a) Violet innermost, red outermost.
(a) Violet innermost, red outermost.
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In secondary rainbow what is the order of colours observed from earth? (a) Violet innermost, red outermost.
(b) Red innermost, violet outer most.
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The innermost layer of the earth is
The correct answer is: (b) Core
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In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is:
a. Calyx, corolla, androecium and gynoecium
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Starting from the innermost part, the correct sequence of parts in an ovule are,
b. egg, embryo sac, nucellus, integument
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Have you ever seen someone climb a small wall? What do you think is the difference between climbing a wall and climbing a high rock?
Yes, I saw it many times. I think climbing a high rock may be a bit easier than climbing a wall because the surface of a rock is irregular with...
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A bilobed, dithecous anther has 100 microspore mother cells per microsporangium.
The bilobed anther can produce 1600 male gametophytes.
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