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BIOLOGY class 11 > Earthworm > Flashcards

Earthworm Flashcards

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1
Q

metameres divide the body externally by

A

annuli

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2
Q

metameres divide the body internally by

A

septae

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3
Q

Pro-oral segment

A

prostomium

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4
Q

first body segment

A

peristomium/ buccal segment

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5
Q

dark coloured band present on the ___ segment is called ____

A

14,15,16th segment….. Clitellum

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6
Q

Body divided into three parts

A

preclitellum, clitellum,postclitellum

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7
Q

Locomotion by

A

setae

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8
Q

Setae are present on all segments except..

A

first , last and clitellum

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9
Q

Setae are embedded in

A

the epidermal pit at the middle of each segment

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10
Q

Setae are made up of

A

chitin

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11
Q

Female genital pore

A

Ventral side at the centre of the 14th segms

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12
Q

Male genital pore

A

18th segment

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13
Q

Spermathecal pore

A

5th, 6th, 8th segm

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14
Q

Genial papillae

A

17th , 19th

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15
Q

excretion by

A

nephridia

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16
Q

Last segment that posses anus

A

pygidium

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17
Q

body of earthworm is covered by

A

thin layer of non-cellular cuticle

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18
Q

Layers of earthworm

A

1) Epidermis 2) two muscle layers 3) innermost coelomi epithelium

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19
Q

The gland that neutralise the humic acid

A

calciferous gland

20
Q

intestinal caecal project in which segment

A

26th

21
Q

internal large fold present on the 26th-35th

A

Typhlosole

22
Q

what is the characteristic feature of intestine of earthworm

A

presence of typhlosole

23
Q

first group in the animal kingdom to have hearts

A

earthworm

24
Q

closed or ope circulatory system

A

closed

25
Q

blood glands are present in which segment

A

4th , 5th ,6th

26
Q

the main blood vessels

A

Dorsal and ventral blood vessels

27
Q

colour of blood

A

red

28
Q

respiration is through

A

moist body surface

29
Q

Three types of blood vessels

A

1) longitudinal
2) transverse or lateral
3) intestinal

30
Q

two nephridia in each segment except

A

first two, last

31
Q

three types of nephridia

A

septal nephridia
integumentary nephridia
pharyngeal nephridia

32
Q

which nephrdia are enteronephric in nature

A

septal and integumentary

33
Q

nerve centre is in segment

A

3

34
Q

testes present in

A

10th and 11th

35
Q

vasa efferentia present upto

A

18th

36
Q

accessory gland

A

17th and 19th

37
Q

Male genital pore

A

18th segment

38
Q

Spermatheca present on

A

6th 7th 8th and 9th segment

39
Q

ovaries on

A

12th and 13th

40
Q

ovidut and genital pore

A

14th

41
Q

types of fetilisation

A

cross fertilisation

42
Q

mating period

A

july to october

43
Q

during mating, alignment is such that the ___ segments of one is aligned to the __ th segment of the other

A

6th and 7th segment …18th segment

44
Q

male genital papillae on

A

18th

45
Q

1 coccon produces

A

2-20 babies ..avg of 4

46
Q

direct or indirect development

A

direct

BIOLOGY class 11 (4 decks)

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