If an onion has 16 chromosomes in its leaf cell, how many chromosomes will be there in its root cell and pollen grain.
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A galvanic cell has `E_(cell)^(@)=1.5" V"`. If an opposing potential of `1.5" V"` is applied to cell, what will happen to the cell reaction and curren
On applying opposing potential, reaction continues to take palce till the magnitude of opposing e.m.f. reaches the value of 1.1" V". After this , reaction stops and no further reaction...
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Dheeraj has twice as many sisters as he has brothers. If Deepa, Dheeraj’s sister has the same number of brothers as she has sisters,
Correct option is (A) 3 Let Dheeraj has x brothers and y sisters. \(\therefore\) y = 2x ______________(1) Deepa is Dheeraj’s sister. \(\therefore\) Deepa has (x+1) brothers and (y - 1) sisters. \(\therefore\) x+1 = y -...
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Dheeraj has twice as many sisters as he has brothers. If Deepa, Dheeraj’s sister has the same number of brothers as she has sisters,
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How many chromatids are present in anaphase – I of meiosis – I of a diploid cell having 20 chromosomes?
40 chromatids are present in anaphase – I of meiosis – I of a diploid cell having 20 chromosomes.
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Students prepared a slide of onion root tip. There were many cells seen under microscope. There was a cell seen under microscope.
It is Anaphase.
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Assertion: Terminal voltage of a cell is greater than emf of cell during charging of the cell. Reason: The emf of a cell is always greater than its te
Correct Answer - C During charging, `E=V+ir` (due to reversed current). In case of charging emf of a cell is less than its terminal voltage while in case of discharging emf...
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The cost of 4 kg onion, 3 kg wheat and 2 kg rice is Rs 60. The cost of 2 kg onion, 4 kg wheat and 6 kg rice is Rs 90. The cost of 6 kg onion 2 kg whea
Let the cost of 1 kg wheat and 1 kg rice be ₹x, ₹ y and ₹ z respectively Given that , 4x+3y+2z=60 2x+4y+6z=90 6x+2y + 3z = 70 `rArr"...
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If a wrong type of pollen or pollen from a different species lands on the stigma, which of these in NOT formed?
Correct option is B. embryo
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What would be the number of chromosomes in the cells of the aleuron layer in a plant species with 8 chromosomes in its synergids?
Correct Answer - A Synergids are two, short-lived, haploid cells lying close to the egg in mature embryo sac of flowering plant ovule. While the endosperm is a triploid tissue formed...
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Identify and write the correct statement : (a) Drosophila male has one X and one Y chromosome. (b) Drosophila male has two X chromosomes.
(a) True. (Drosophila male has one X and one Y chromosome)
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