Segmentation

Q.

What is metameric segmentation?

Q.

Segmentation in the body is first observed in which of the following:

(a) Platyhelminthes (b) Aschelminthes (c) Annelida (d) Arthropoda

Q.

To which phylum does earthworm belong?

Q.

Draw the diagram of earthworm.

Q. Metamerism is a characteristic of:

1. Flatworms
2. Mollusca
3. Porifera
4. Annelida

Q. When the body is externally and internally divided into segments, it is called:

1. False segmentation
2. Asegmentation
3. True segmentation
4. Pseudo segmentation

Q. Which of the following about segmentation is/are true?

1. Segmentation is also known as metamerism
2. Humans exhibit homomeric segmentation
3. Segmentation is found only in invertebrates
4. Metameres could be either similar or different

Q. Match the columns I, II and III are choose the correct combination from the options given.

	Column I		Column II		Column III
a	Wuchereria	1	Liver fluke	Q	Monoecious
b	Hirudinari	2	Filaria worm	R	Metamerism
c	Ancylostoma	3	Blood suckingleech	S	Endoparasite
d	Fasciola	4	Hookworm	T	Dioecious

1. a-4-T, b-3-R, c-2-S, d-1-Q
2. 1-2-S, b-3-Q, c-4-T, d-1-S
3. a-2-T, b-3-R, c-4-S, d-1-R
4. a-2-Q, b-3-T, c-4-R, d-1-S

Q. Metamerism is a characteristic of:

1. Flatworms
2. Porifera
3. Mollusca
4. Annelida

Q. If the body is externally and internally divided into segments, then it is called

1. false segmentation
2. none of the above
3. pseudo segmentation
4. true segmentation

Q.

Do Polychaetes have setae?

Q. Which of the following about segmentation is/are true?

1. Segmentation is also known as metamerism
2. Humans exhibit homomeric segmentation
3. Segmentation is found only in invertebrates
4. Metameres could be either similar or different

Q.

Write down four main characters of Nematoda. Give two examples.

Q. Metamerism is a characteristic of:

1. Flatworms
2. Mollusca
3. Porifera
4. Annelida

Q. In Earthworm, dorsal blood vessel is collecting channel

1. Behind 13th segment
2. Anterior 13 segment
3. Throughout
4. In typhlosolar region

Q. Select the correct option:

1. A- (i); B- (ii); C- (iii); D- (iv); E- (v); F- (vi); G- (vii)
2. A- (i); B- (ii); C- (iii); D- (v); E- (iv); F- (vi); G- (vii)
3. A- (i); B- (iii); C- (ii); D- (iv); E- (v); F- (vii); G- (vi)
4. A- (i); B- (iii); C- (ii); D- (v); E- (iv); F- (vii); G- (vi)

Q. Most commonly used marker enzyme in clinical diagnosis of prostate cancer is

1. Amylase
2. $\gamma$-GTpase
3. Alkaline phosphatase
4. Acid phosphatase

Q. In Earthworm, dorsal wall of intestine from 26th segment to 95th segment forms a median internal fold called

1. Typhlosole
2. Trochophore
3. Clitellum
4. Trachea
5. Nephridium

Q. Typhlosole of Earthworm is a device for

1. Extra secretion of digestive enzymes
2. Increasing absorptive area
3. Slowing down passage of food
4. Crushing of food

Q. Brown colour of earthworm is due to

1. Melanin
2. Porphyrin
3. Both A and B
4. Haemoglobin

Q. In earthworm, the anterior loops are situated in

1. ${10}^{th}$ and ${11}^{th}$ segment
2. $6^{th}$ and $8^{th}$ segment
3. ${12}^{th}$ and ${13}^{th}$ segment.
4. $4^{th}$ and $5^{th}$ segment

Q. The condition where the body of an organism has repetitive units containing similar organs and structural elements is called .

1. organisation
2. segmentation
3. division
4. classification

Q. In Earthworm, mouth is situated on

1. Prostomium
2. Stomium
3. Peristomium
4. Protostomium

Q. Which of the following has the least number of body segments?

1. Lobster
2. Grasshopper
3. Earthworm
4. Flatworm

Q. In earthworm, efficiency of food absorption is due to structure

1. Villi
2. Typhlosole
3. Caecum
4. Stomach

Q. A dorsal horn is present on the ............ of mulberry silk worm (caterpillar).

1. Head
2. 2${}^{nd}$ thorasic segment
3. 8${}^{th}$ abdominal segment
4. 5${}^{th}$ abdominal segment

Q. Ascaris is characterized by the

1. presence of metamerism only
2. presence of true coelom but an absence of metamerism
3. presence of neither true coelom nor metamerism
4. presence of true coelom and metamerism

Q. Dorsal vessel of earthworm is

1. Distributing
2. Collecting
3. Collecting in first thirteen segments and distributing in the rest
4. Distributing in first thirteen segments and collecting in the rest

Q. In earthworm, arrangement of blood vessels are

1. Different in last fifteen segments
2. Same throughout
3. Different in first thirteen segments
4. Different in middle thirteen segments

Q. In Earthworm, arrangement of blood vessels is

1. Same throughout
2. Different in last fifteen segments
3. Different in first thirteen segments
4. Different in middle thirteen segments