Structural Organisation of Animals One Mark Online Test

Structural Organisation of Animals One Mark Online Test (10th Standard Science)

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In leech locomotion is performed by

A.Anterior sucker B.Parapodia C.Setae D.Contraction and relaxation of muscles

The segments of leech are known as

A.Metameres (somites) B.Proglottids C.Strobila D.All the above

Pharyngeal ganglion in leech is a part of

A.Excretory system B.Nervous system C.Reproductive system D.Respiratory system

The brain of leech lies above the

A.Mouth B.Buccal Cavity C.Pharynx D.Crop

The body of leech has

A.23 segments B.33 segments C.38 segments D.30 segments

Mammals are ______________ animals.

A.Cold blooded B.Warm blooded C.Poikilothermic D.All the above

To which order does the Indian cattle leech (Hirudinaria granulosa) belong?

A.Gnathobdellida B.Lagomorpha C.Rhynchobdellida D.Oligochaeta

Which segments of the body of a leech constitute the clitellar region?

A.1st to 5th segments B.6th to 8th segments C.9th to 11th segments D.12th to 22nd segments

Where is the female genital pore situated in the body of a leech?

A.Mid-ventrally between the 2nd and 3rd annuli of the 10th segment B.Mid-ventrally between the 2nd and 3rd annuli of the 11th segment C.Dorsally on the 26th segment above the posterior sucker D.Ventrally on the 5th segment near the buccal cavity

Q10

Which tissue lies beneath the longitudinal muscles and fills the coelomic space around the gut in leeches?

A.Parenchyma tissue B.Botryoidal tissue C.Epithelial tissue D.Collenchyma tissue

Q11

What is the primary function of the substance hirudin secreted by the salivary glands of a leech?

A.Digestion of complex carbohydrates in the crop B.Prevention of blood coagulation during feeding C.Neutralization of stomach acids in the host D.Destruction of bacterial cells inside the host blood

Q12

How many main longitudinal haemocoelic channels are present in the circulatory system of a leech?

A.Two B.Three C.Four D.Six

Q13

How many pairs of nephridia are present in a leech for excretion, and in which segments are they located?

A.11 pairs, located in segments 12 to 22 B.17 pairs, located in segments 6 to 22 C.23 pairs, located in segments 1 to 23 D.33 pairs, located in all body segments

Q14

In leeches, how many pairs of testes sacs are present and in which body segments are they located?

A.1 pair in the 11th segment B.5 pairs in segments 6 to 10 C.11 pairs in segments 12 to 22 D.17 pairs in segments 6 to 22

Q15

What are the tactile hairs present on either side of the upper lip of a rabbit called?

A.Pinnae B.Vibrissae C.Cilia D.Flagella

Q16

Which anatomical structure separates the thoracic cavity from the abdominal cavity in rabbits?

A.Pericardium B.Pleura C.Diaphragm D.Corpus callosum

Q17

Which of the following represents the correct dental formula for an adult rabbit?

A.\(\frac{2033}{1023}\) B.\(\frac{1023}{2033}\) C.\(\frac{2123}{2123}\) D.\(\frac{3142}{3143}\)

Q18

In rabbits, which specialized digestive structure contains bacteria that help in the digestion of cellulose?

A.Crop B.Stomach C.Caecum D.Rectum

Q19

In the brain of a rabbit, what connects the right and left cerebral hemispheres?

A.Corpus callosum B.Corpora quadrigemina C.Pons varolii D.Infundibulum

Q20

How many pairs of cranial nerves are present in the peripheral nervous system of a rabbit?

A.10 pairs B.12 pairs C.31 pairs D.37 pairs

Q21

Which pair of accessory glands is present in the female reproductive system of a rabbit?

A.Prostate gland and seminal vesicle B.Cowper's gland and perineal gland C.Bartholin's gland and thyroid gland D.Adrenal gland and pituitary gland

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This free online practice test covers Structural Organisation of Animals from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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