Test: Earthworm (NCERT)


Test Description

15 Questions MCQ Test NCERTs at Fingertips: Textbooks, Tests & Solutions | Test: Earthworm (NCERT)

Test: Earthworm (NCERT) for NEET 2022 is part of NCERTs at Fingertips: Textbooks, Tests & Solutions preparation. The Test: Earthworm (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Earthworm (NCERT) MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Earthworm (NCERT) below.
Solutions of Test: Earthworm (NCERT) questions in English are available as part of our NCERTs at Fingertips: Textbooks, Tests & Solutions for NEET & Test: Earthworm (NCERT) solutions in Hindi for NCERTs at Fingertips: Textbooks, Tests & Solutions course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Earthworm (NCERT) | 15 questions in 15 minutes | Mock test for NEET preparation | Free important questions MCQ to study NCERTs at Fingertips: Textbooks, Tests & Solutions for NEET Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Test: Earthworm (NCERT) - Question 1

Pheretima and its close relative derive nourishment from

Detailed Solution for Test: Earthworm (NCERT) - Question 1

Pheretima and its close relatives derive nourishment from decaying organic matter found in the soil. They also feed on the bits of plants and animal matter.

Test: Earthworm (NCERT) - Question 2

Which of the following is incorrect for Pheretima?

Detailed Solution for Test: Earthworm (NCERT) - Question 2

Clitellum or cingulum is a prominent circular band of glandular skin found from the 14th to 16th segments. It secretes mucus and albumen which helps in the formation of cocoon, and is used from fertilization of the eggs.

Test: Earthworm (NCERT) - Question 3

The lateral hearts in earthworm have

Detailed Solution for Test: Earthworm (NCERT) - Question 3

A pair of large, thick and muscular vertical vessels, called hearts, are present in each of the segments 7, 9, 12 and 13 in earthworm. Hearts of 7th and 9th segments are called lateral hearts that connect dorsal and ventral vessels only. They consist of 4 pairs of valves 

Test: Earthworm (NCERT) - Question 4

Blood vessels in Pheretima, which have valves are 

Detailed Solution for Test: Earthworm (NCERT) - Question 4

Blood vessels of Pheretima, which have valves are dorsal. Blood passes from backward to forward direction. To prevent the backward flow of the blood, valves are present infront of each septum.

Test: Earthworm (NCERT) - Question 5

One very special feature in the earthworm (Pheretima) is that

Detailed Solution for Test: Earthworm (NCERT) - Question 5

From the 27th segment upto 23-25 segments in front of the anus in intestine of earthworm, lies a highly glandular and vascular part called typhlosole. It greatly increases the effective absorption area for digested food in the intestine.

Test: Earthworm (NCERT) - Question 6

Which one of the following structures in Pheretima is correctly matched with its function?

Detailed Solution for Test: Earthworm (NCERT) - Question 6

Clitellum - secretes cocoon where fertilization and development takes place.
Gizzard - grinds the food
Setae - help in locomotion
Typhlosole - increases area of absorption in intestine

Test: Earthworm (NCERT) - Question 7

Which of the following is absent in the coelomic fluid of earthworm?

Detailed Solution for Test: Earthworm (NCERT) - Question 7

Coelomic fluid of earthworm is alkaline, colourless fluid containing water, slats some proteins and corpuscles. Haemoglobin is not present in coelomic fluid. It is found dissolved in blood plasma giving red colour to blood. Blood is confined to heart and vessels in closed circulatory system.

Test: Earthworm (NCERT) - Question 8

Which of the following structures is correctly matched with its description?

Detailed Solution for Test: Earthworm (NCERT) - Question 8

(i) Septal nephridia and pharyngeal nephridia- Both are exonephric
(ii) Typhlosole- Internal median fold present in the dorsal wall of the intestine of earthworm, meant to increase the absorpton surface area
(iii)Hepatic caeca- Blind tubules present at the junction of foregut and mid-gut in the alimentary canal of the cockroach
(iv) Gizzard- Helps in grinding the soil particles and decaying leaves

Test: Earthworm (NCERT) - Question 9

Which of the following layers you will find in the body wall of earthworm (from outside to inside)?

Detailed Solution for Test: Earthworm (NCERT) - Question 9

Externally the body wall of earthworm is covered by a thin non cellular cuticle below which lies the epidermis two muscle layers (circular and longitudinal) and innermost coelomic  epithelium.

Test: Earthworm (NCERT) - Question 10

Match column I with column II and select the correct option from the codes given below:

Detailed Solution for Test: Earthworm (NCERT) - Question 10

(A) Buccal cavity: 1-3
(B) Pharynx: 3-4
(C) Oesophagus: 5-7
(D) Gizzard: 8-9
(E) Stomach: 9-14
(F) Intestine: 15 to last
(G) Typhlosole: 26-35
So, the correct answer is
'A- (i); B- (ii); C- (iii); D- (iv); E- (v); F- (vi); G- (vii)'.

Test: Earthworm (NCERT) - Question 11

Given is the figure of alimentary canal of earthworm. Select the option that correctly identifies the parts labelled as A to E

Detailed Solution for Test: Earthworm (NCERT) - Question 11

Alimentary canal of earthworm is a straight structure with variable diameter extending from anus and consisting of buccal cavity, pharynx, oesophage gizzard, stomach and intestine Pharynx is pear-se muscular, extends upto 4th segment, nervering is per on the anterior region in groove between buccal chas and pharynx. Gizzard is oval, most muscular part by internal cuticle. It triturates (grinds) ingested food extends upto segment 8th. Stomach is a narrow,gland and vascular tube extending from segment 9-14 sphincter is present between gizzard and stomach between stomach and intestine.
Lymph glands occur in each of the segment 26 and to behind it. There are two small, whitish glands one ones side of dorsal blood vessel. They are believed to gerer
phagocytic cells.

Test: Earthworm (NCERT) - Question 12

Which part of the alimentary canal of earthworm (in the given figure) helps in grinding the soil particles?

Detailed Solution for Test: Earthworm (NCERT) - Question 12

Part labelled as 'C' is gizzard which helps in grinding the soil particles in earthworm

Test: Earthworm (NCERT) - Question 13

Primary function of enteronephric nephridia of Pheretima

Detailed Solution for Test: Earthworm (NCERT) - Question 13

Septal nephridia and pharyngeal nephridia earthworm are enteronephric and thus excrete nitrogenous wastes into the lumen of alimentary canal/enteron

Test: Earthworm (NCERT) - Question 14

Earthworm has no skeleton. During burrowing anterior end becomes turgid and acts as hydraulic skeleton. It is due to

Detailed Solution for Test: Earthworm (NCERT) - Question 14

Hydraulic skeleton is the system of support founded bodied invertebrates, which relies on the incompresse of fluids contained within the body cavity. In earthworms coelomic fluid is under pressure within the coelom and therefore provides support for internal organs. Due to hydraulic skeleton, during burrowing, the anterior end and aids in relaxation of longitudinal muscles

Test: Earthworm (NCERT) - Question 15

In Pheretima, there are red coloured round bodies in 4th, 5th and 6th segments above the alimentary canal. They are believed to be involved in

Detailed Solution for Test: Earthworm (NCERT) - Question 15

In Pheretima, the red coloured bodies found in 4th, 5th, 6th segments above the alimentary canal are called blood glands. These glands serve for the manufacture of blood corpuscles (leucocytes) and haemoglobin. They are also believed to be excretory in nature.

Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about Test: Earthworm (NCERT) Page
In this test you can find the Exam questions for Test: Earthworm (NCERT) solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Earthworm (NCERT), EduRev gives you an ample number of Online tests for practice