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 Multiple Choice QuestionsMultiple Choice Questions

21.

The kind of epithelium which forms the inner walls of blood vessels is 

  • cuboidal epithelium

  • columnar epithelium

  • ciliated columnar epithelium

  • ciliated columnar epithelium

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22.

If for some reason our goblet cells are non -functional, this will adversely effect

  • Production of somatostatin

  • secretion of sebum from the sebaceous glands

  • maturation of sperms

  • maturation of sperms

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23.

In which one of the following organism, its excretory organs are correctly stated?

  • Humans- Kidneys, sebaceous glands and tear glands

  • Earthworm -Pharyngeal, integumentary and septal nephridia

  • Cockroach - Malpighian tubules and enteric caeca

  • Cockroach - Malpighian tubules and enteric caeca


B.

Earthworm -Pharyngeal, integumentary and septal nephridia

In earthworm, the excretory system is made up of many segmentally arranged microscopic coiled tubes called nephridia. These are ectodermal in origin and analogous to the vertebrate kidney.
In Pheretima, following three types of nephridia are seen.

(i) Pharyngeal nephridia - Situated on either side of pharynx and oesophagus in 4, 5 and 6 segments.

(ii) Integumentary nephridia - Scattered in the body wall, seen from 7th segment onwards

(iii) Septal nephridia - Largest nephridia attached to both faces of each intersegment septum behind 15th segment

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24.

The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is 

  • cuboidal

  • glandular

  • ciliated

  • ciliated

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25.

Uric acid is the chief nitrogenous component of the excretory products of 

  • man

  • earthworm

  • cockroach

  • cockroach

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26.

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is

  • excretory fluid

  • coelomic fluid

  • haemolymph

  • haemolymph

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27.

The cell junctions called tight, adhering and gap junctions are found in 

  • muscular tissue

  • connective tissue

  • epithelial tissue

  • epithelial tissue

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28.

Which one of the following is the true description of an animal concerned?

  • Earthworm - The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine.

  • Frog - Body divisible into three regions- head, neck and trunk

  • Rat - Left kidney is slightly higher in position that the right one

  • Rat - Left kidney is slightly higher in position that the right one

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29.

Which one of the following pair of items correctly belongs to the category of organs mentioned against it? 

  • Thorn of  Bougainvillea and tendrils of Cucurbita - Analogous organs

  • Nictitating membrane and blind spot in human eye - Vestigial organs

  • Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

  • Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

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30.

In which one of the following preparations are you likely to come across cell junctions most frequently?

  • Ciliated epithelium.

  • Thrombocytes

  • Tendon

  • Tendon

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