Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?
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(a) Liver fluke, Sea anemone, Sea cucumber – Bilateral symmetry (b) Centipede, Prawn, […]
Which one of the following phyla is correctly matched with its two general characteristics?
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(a) Arthropoda – Body divided into head, thorax and abdomen and respiration by tracheae (b) Chordata – Notochord […]
Which one of the following is the true description about an animal concerned?
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(a) Earthworm – The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine (b) Frog […]
The haemoglobin of a human foetus
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(a) has a lower affinity for oxygen than that of the adult (b) its affinity for oxygen is the same as that of an adult (c) […]
Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starach (a-e) make it useful as a storage material? (A) Easily translocated (B) Chemically non-reactive (C) Easily digested […]
The repture and fractionation do not usually occur in the water column in vessel / tracheids during the ascent of sap because of
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(a) lignified thick walls (b) cohension and adhesion (c) […]
Vacuole in a plant cell
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(a) is membrane-bound and contains storage proteins and lipids (b) is membrane-bound and contains water and excretory substances (c) lacks membrane and contains air (d) lacks membrane and […]
What is antisense technology?
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(a) A cell displaying a foreign antigen used for synthesis of antigens (b) Production of somaclonal variants in tissue cultures (c) When a piece of RNA that is […]
Consider the following four measures (A-D) that could be taken to successfully grow chickpea in an area where bacteri blight disease is common A)Spray with Bordeaux mixture B)Control of the insect vector of the disease […]
What does the filiform apparatus do at the entrace into ovule?
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(a) It helps in the entry of pollen tube into a synergid (b) It prevents entry of more than one poller […]
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