Class 11 Biology - Chapter Structural Organisation in Animals NCERT Solutions | Distinguish between the following (a) Pr
Distinguish between the following
(a) Prostomium and peristomium
(b) Septal nephridium and pharyngeal nephridium
(a)
|
Prostomium |
Peristomium |
|
Prostomium is a small fleshy lobe, which overhangs the mouth of an earthworm. It helps the organism push into the soil and is sensory in function. |
The first body segment in the earthworm is called the peristomium. It surrounds the mouth opening. |
(b)
|
Septal nephridium |
Pharyngeal nephridium |
|
They are present on both sides of inter-segmental septa behind the 15thsegment and they open into the intestine. |
They are present as three paired tufts in the fourth, fifth, and sixth segments. |
More Questions From Class 11 Biology - Chapter Structural Organisation in Animals
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- Q:- Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?
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- Q:- Distinguish between
(a) Simple epithelium and compound epithelium.
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(c) Dense regular and dense irregular connective tissues
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(a) Areolar tissue; blood; neuron; tendon
(b) RBC; WBC; platelets; cartilage
(c) Exocrine; endocrine; salivary gland; ligament
(d) Maxilla; mandible; labrum; antennae
(e) Prothorax; mesothorax; metathorax; coxa - Q:- Match the terms in column I with those in column II:
Column I Column II
(a) Compound epithelium (i) Alimentry canal
(b) Compound eye (ii) Cockroach
(c) Septal nephridia (iii) Skin
(d) Open circulatory system (iv) Mosaic vision
(e) Typhlosole (v) Earthworm
(f) Osteocytes (vi) Phallomere
(g) Genitalia (vii) Bone
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