STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
STRUCTURAL ORGANISATION IN ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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11
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10
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12
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22
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Detailed explanation-1: -All leeches are hermaphroditic, and reproduction is always sexual. The testes, from four to 10 pairs, are arranged by segments, beginning with segment 12 or 13.
Detailed explanation-2: -One pair of ovaries and testis are present in human females and males respectively. Ovaries produce ovum and sperm is produced by the testis.
Detailed explanation-3: -These are paired organs present in particular segments. In leech, there are approximately 17 pairs of nephridia.
Detailed explanation-4: -Leeches have 9 pairs of testicles, 10 stomachs, 32 brains, several hundred teeth.
Detailed explanation-5: -Leeches have a soft, elongated, dorso-ventrally flattened body that measures approximately 30-35 cms in length. Their body is divided metamerically into 33 segments or somites. Each segment is further divided into annuli or rings.