Juxta glomerular apparatus is formed by cellular modifica-tion in the
Match the following and choose the correct option.
| Column I | Column II |
|---|---|
| A.Chromosomes are moved spindle equator | 1.Pachyteneto |
| B.Centromere splits and chromatids apart | 2.Zygotene |
| C.Pairing between homologous chromosomes takes place | 3.Anaphase |
| D.Crossing between homologous chromosomes | 4.Metaphase |
Which of the following statements are true/false?
(1)In Torpedo the electric organs are capable of generating strong electric shock to paralyze the prey.
(2)Bony fishes use pectoral, pelvic, dorsal anal and caudal fins in swimming.
(3)Amphibian skin is moist and has thick scales.
(4)Birds are poikilothermous animals.
(5)The most unique mammalian characteristic is the presence of milk producing mammary glands by which the young ones are nourished.
Which of the following is a primary meristem?
Goblet glands are
Pattela is largest :
The finches of Galapagos islands provide an evidence in favour of
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Solution
The finches of Galapagos islands provides an evidence in favour of bio-geographical evolution.
In human sex determination the key factor is
The glomerular filtrate consists of
The diagram summarises the pathway of glucose breakdown
When two steps result in a net increase of ATP?
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Solution
ATP formation occurs both at 2, where glyceraldehyde-3-phosphate is converted to pyruvate; and at 5, where the six-carbon compound, citrate,releases water and CO2 in the Krebs cycle.
In the five kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen fixing bacteria and methanogenic archaebacteria ?
The diagram represents the reproductive organ of male cockroach. Choose the correct combination of labelling
The enzyme used to dissolve blood clots in heart attack victim is
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Solution
Tissue plasminogen activator(TPA) is the enzyme that dissolve blood clots.
The biodiversity is the study of diversity
Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it(Mostly in the nucleus)
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Solution
Cortisol and testosterone are steroid hormones which are lipid soluble and easily pass through the cell membrane of a target cell and bind to specific intracellular receptor.
Iclass phaeophyceae, the plant body is usually attached to the substratum by a _____
(A)_____, and has a stalk, the_____
(B)_____ and leaf like photosynthetic organ the_____
(C)_____.
Calcitonin is a thyroid hormone which
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Solution
Calcitonin is a polypeptide hormone which lowers calcium and phosphate level of plasma by inhibiting bone degradation and stimulating their uptake by bone parathyroid hormone elevates calcium level in blood.
Which of the following is molecular scissors?
Cymose inflorescence is present in :
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Solution
Cymose infloresence in present in Solanum.Cymose inflorescence is the name of determinate or definite inflorescence in which the tip of the main axis terminatesin a flower and further growth continues by one or more lateral branches which also behave like the main axis
Some blue green algae can be used as bio-fertilizer as they are