Structural Organisation in Animals Test

Result

Structural Organisation in Animals Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Match the following and choose the correct option:

(A) Adipose tissue (i) Nose
(B) Stratified epithelium (ii) Blood
(C) Hyaline cartilage (iii) Skin
(D) Fluid connective tissue (iv) Fat storage

A
A- (i); B- (ii), C- (iii); D- (iv)

B
A- (iv); B- (iii), C- (i); D- (ii)

C
A- (iii); B- (i), C- (iv); D- (ii)

D
A- (ii); B- (i), C- (iv); D- (iii)

Solution

(A) Adipose tissue - Fat storage
(B) Stratified epithelium - Skin
(C) Hyaline cartilage - Nose
(D) Fluid connective tissue - Blood
So, the correct answer is (b).
Question 2
1 / -0

In cockroaches, digestive juice is secreted by the

A
gizzard

B
Malpighian tubules

C
hepatic caeca

D
oesophagus.

Solution

A. The gizzard grinds and crushes the food particles into finer ones and again it filters the food with the help of the fine bristles present at its posterior region.
B. Malpighian tubules: It is the excretory organ in cockroach.
C. Hepatic caeca: The glandular cells of the internal lining of the midgut and hepatic caeca produce juice containing digestive enzymes.
D. Oesophagus: They secrete a hormone which increases the pulsatile rate of heart, peristalsis of the hindgut but decreases the peristalsis of the foregut.
So, the correct answer is 'Hepatic caeca'.
Question 3
1 / -0

One of the examples of the action of the autonomous neural system is ____________.

A
Swallowing of food

B
Pupillary reflex

C
Peristalsis of the intestine

D
All of these

Solution

Autonomous neural system controls and coordinates the involuntary activities of various organs. It regulates involuntary activities of the body i.e., activities that are not under the will power of the animal, e.g. swallowing of food, pupillary reflex, peristalsis of the intestine, etc.
Question 4
1 / -0

Sympathetic neural system induces ________________.

A
Secretion of digestive juices

B
Heartbeat

C
Secretion of saliva

D
All of these

Solution

The sympathetic neural system induces a heartbeat, whereas decreases the secretion of digestive juices, and decreases the secretion of saliva as well.
So here option (b) -sympathetic neural system induces heartbeat is the correct answer.
Question 5
1 / -0

Which one of the following statements is incorrect?

A
In cockroaches and prawns, excretion of waste material occurs through Malphighian tubules

B
In ctenophores, locomotion is mediated by comb plates.

C
In Fasciola flame cells take part in excretion.

D
Earthworms are hermaphrodites and yet cross fertilisation take place among them.

Solution

Statement A is incorrect because Malphigian tubules are excretory structure in most of insects, including cockroach, but green gland perform excretory functions in crustaceans like prawn, whereas all the other statements are true.
Question 6
1 / -0

The given figure shows the structure of a neuron. Select the option that correctly identifies the parts labelled as A to E.

A
A-Nerve fibres, B-Cyton, C-Schwann cell, D-Node of Ranvier, E-Synaptic Knob

B
A-Dendrites, B-Cyton, C-Schwann cell, D-Node of Ranvier, E-Synaptic Knob

C
A-Dendrites, B-Nerve cell, C-Schwann cell, D-Synaptic Knob, E-Node of Ranvier

D
A-Axons, B-Cyton, C-Nerve cell, D-Node of Ranvier, E-Synaptic Knob

Solution

Solution: B.
Neurons vary in shape, size and structure according to their location and function. Nearly all neurons have three parts namely: cell body, axon and dendrites. Some axons are covered with myelin sheath i.e. insulated fatty substance, which is formed by Schwann cells.
Question 7
1 / -0

Which of these epithelia is chiefly involved in diffusion and thereby is found in the wall of blood vessel and air sacs of the lungs?

A

B

C

D

Solution

The alveolar sacs of the lungs and blood vessels are made up of simple squamous epithelium. Such epithelia are involved in the process of diffusion.
So, the correct answer is (D).
Question 8
1 / -0

............ heart of cockroach chamber is without ostia

A
1st prothoracic

B
Last thoracic

C
First abdominal

D
Last abdominal

Solution

Heart of cockroach is long and is 13 chambered. Each chamber of the heart receives oxygenated blood from the dorsal sinus through ostia. Ostia are guarded by auricular valves which prevents the back flow of blood. First prothoracic chamber of cockroaches do not posses ostia.
Question 9
1 / -0

Read the statements carefully from a top:

(a) Second largest phylum
(b) Chitinous exoskeleton
(c) Solid, ventral nerve cord
(d) Radial symmetry
(e) Closed circulatory system

How many statements are incorrect for Arthropoda phylum?

A
One

B
Two

C
Three

D
Four
Solution
(a) The first largest Phylum Arthropoda and the second is Phylum Mollusca.
(b) Arthropods are covered by an exoskeleton of chitin which supports and provides protection.
(c) Arthropods have a paired set of nerve cords known as ventral nerve cords, i.e, they run along the stomach region which is solid and double (they have a double row of ganglia connected longitudinally).
(d) Arthropods can be divided into two identical halves (right half is a mirror image of its left half) this is called bilateral symmetry.
(e) Arthropods lack blood vessels i.e they do not have veins and arteries, their heart pumps blood directly into the body cavity and the organs are bathed. This type of circulatory system is called an open circulatory system.
So, the correct answer is 'Two'.
Question 10
1 / -0

Smooth muscles are found in

A
External anal sphincter

B
Internal anal sphincter

C
Internal urethral sphincter

D
Both B and C

Solution

Smooth muscles are also called as involuntary muscles. They are found in the walls of hollow organs like intestines, oesophagus, bronchi, stomach, internal anal sphincter, internal urethral sphincter. The movement of these muscles is not under our control.
Thus, the correct answer is 'B and C.'