Organisms who are able to freely interbreed producing fertile off

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41.

Organisms who are able to freely interbreed producing fertile off-springs and having a similar blueprint for making these organisms are referred to as

  • Species

  • Tribe

  • Genus

  • Sub-genus


A.

Species

The term species was given by John Ray and are the lowest category of classification. A species is a group of closely related individuals having similar morphological, anatomical, biochemical and cytological characteristics. It consists of naturally interbreeding population with the ability to produce fertile offsprings. This group is reproductively isolated and genetically closed.


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42.

The stratified epithelium is found in

  • Seminiferous tubule

  • Fallopian tube

  • Nasal cavity

  • Kidney tubules


43.

The basic unit of classification is

  • Species

  • Genus

  • Family

  • Phylum


44.

In most fungi, cell wall is chiefly made of

  • Cellulose

  • Chitin

  • Protein

  • Lipid


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45.

The blood of cockroach contains no respiratory pigment. It means that

  • respiration is anaerobic

  • cockroach does not respire

  • oxygen goes directly into tissues by diffusion

  • oxygen goes into tissue by intracellular capillary system


46.

Sciatic vein of frog opens in

  • heart

  • kidney

  • pelvic region

  • liver


47.

Which is common between earthworm, leech and centipede?

  • They have Malphigian tubules

  • They are hermaphrodite

  • They have ventral nerve cord

  • None of the above


48.

In Pheretima, septa are absent between which segments?

  • 3/4 and 9/10

  • 4/5 and 8/9

  • 5/6 and 7/8

  • 7/8 and 6/7


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49.

In cockroach, larval and nymphal characters are maintained by

  • ecdysone

  • salivary glands

  • parotid gland

  • juvenile hormone


50.

The female genital pore of Pheretima posthuma located upon the segment

  • 14th

  • 16th

  • 18th

  • 15th


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