MEDIUM
TS EAMCET
IMPORTANT
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Pheretima posthuma (earthworm) is highly useful as
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Important Questions on Animal Diversity - I (Invertebrate Phyla)
EASY
TS EAMCET
IMPORTANT
Copulation in earthworm occurs during
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TS EAMCET
IMPORTANT
A molluscan with calcareous spicules is
EASY
TS EAMCET
IMPORTANT
Wax glands In honey bees are present in these segments:
MEDIUM
TS EAMCET
IMPORTANT
Craspedote medusa is present in which of the following pairs?
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TS EAMCET
IMPORTANT
Identify the nematodes which have various shapes of amphids but are without phasmids.
MEDIUM
TS EAMCET
IMPORTANT
In the transverse section of Pheretima, identify the correct sequence of body wall layers from outer to inner side.
(A) Circular muscles
(B) Parietal peritoneum
(C) Epidermis
(D) Cuticle
(E) Longitudinal muscles
MEDIUM
TS EAMCET
IMPORTANT
Statement: In gastropods, due to torsion mantle cavity is placed anteriorly behind and above the head.
Reason: During the larval stage, visceral mass, shell and mantle cavity are twisted upto counterclockwise with respect to the head and foot.
MEDIUM
TS EAMCET
IMPORTANT
Match the correct pairs in List-I and List-II with reference to Pheretima.
| List-I | List-II | ||
| (A) | Pharyngeal nephridia | (I) | 14th segment |
| (B) | Stomach | (II) | 18th segment |
| (C) | Anterior loops | (III) | 9th to 14th segments |
| (D) | Male genital apertures | (IV) | 4th, 5th and 6th segments |
| (V) | 10th and 11th segments |
The correct match is:
