One very special feature in the earthworm Pheretima is that
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(a) fertilisation for eggs occurs inside the body (b) the typhlosole greatly increases the effective absorption area of the digested food in […]
What will you look for to identify the sex of the following?
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(a) Female Ascaris- Sharply curved posterior end (b) Male frog- A copulatory pad on the first digit of the hind limb […]
Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct?
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(a) It is present only in larval tail in Ascidians (b) It is […]
Function of companion cells is
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(a) providing energy to sieve elements for active transport (b) providing water to phloem (c) loading of sucrose into sieve elements by passive transport (d) loading of […]
The type of muscles present in our:
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(a) heart are involuntary and unstriated smooth muscles (b) intestine are striated and involuntary (c) thigh are striated and voluntary (d) upper arm are smooth […]
Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
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(a) Reptilia : possess 3 – chambered heart with one incompletely divided […]
Which of the following is correctly stated as it happens in the common cockroach ?
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(a) Malpighian tubules are excretory organs projecting out from the colon (b) Oxygen is transported by haemoglobin […]
In Kranz anatomy, the bundle sheath cells have
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(a) thin walls, many intercellular spaces and no chloroplasts (b) thick walls, no intercellular spaces and large number of chloroplasts (c) thin walls, no […]
In which one of the following, the genus name, its two characters and its class/ phylum are correctly matched?
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(a) Ascaris-Annelida-Body segmented, Males and Females distinct (b) Salamandra-Amphibia-A tympanum represents ear, fertilization is external […]
Consider the following four statements whether they are correct or wrong? (A)The sporophyte in liverworts is more elaborate than that in mosses (B)Salvinia is heterosporous (C)The life cycle in all seed-bearing plants is diplontic (D)In […]
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