Uni and Multicellular Organisms

Q.

What meant by division of labour in multicellular organisms?

Q.

What are setae in earthworms involved in?

Q.

Multicellular organisms have a division of labour. Explain.

Q.

Multicellular organisms have division of labour. Explain.

Q. In which of the following organisms is the cell considered to be equivalent to the organism?

1. Multicellular eukaryotes
2. Both a and b
3. Unicellular prokaryotes
4. Unicellular eukaryotes

Q. Biological organisation helps to understand the complexity of living world which starts at _______.

1. tissue level
2. organ level
3. cellular level
4. organism level

Q. In which of the following organisms is the cell considered to be equivalent to the organism?

1. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Unicellular prokaryotes
2. Unicellular eukaryotes
3. Multicellular eukaryotes
4. Both a and b

Q.

How are Choanocytes related to Choanoflagellates?

Q. Which of the following is the correct order of structural organization in multicellular organisms?

1. Acellular organisation

2. Multicellularity

3. Organ level organisation

4. Cellular organisation

Q. The setae in earthworm are present in all segment except

1. first and last
2. first segment and clitellum
3. first, last segments and clitellum
4. clitellum and last segment

Q. Without any exception, which of the following sets of characters can be considered as the most defining property of living organisms?

1. Reproduction, growth and movement
2. Metabolism, cellular organization and consciousness
3. Response to stimulus, locomotion and sexual reproduction
4. Genetic material, growth and self-replication

Q. Setae occur in earthworm in all segments except

1. Clitellar region
2. Anal segment
3. Peristomium
4. All of the above

Q. What is a division of labour? Explain it in context of multicellular organisms.​ ​

Q. Nephrostome occurs in earthworm

1. Septal nephridia
2. Integumentary nephridia
3. Pharyngeal and septal nephridia
4. Pharyngeal and integumentary nephridia

Q. A multicellular organism is made up of
(a) single cell
(b) many cells
(c) two cells
(d) either (b) or (c)

Q. Several tissues combine to form_________________

1. Organ
2. Organism
3. Cell
4. Cytoplasm

Q. Number of segments present in earthworm is

1. 85-400
2. 100-200
3. 20-95
4. 115-120

Q. The setae in earthworm are present in all segment except

1. first segment and clitellum
2. first, last segments and clitellum
3. clitellum and last segment
4. first and last

Q. Somites/metameres/segments present in the body of earthworm are

1. 60-80
2. 80-100
3. 100-120
4. 120-160

Q. Which type of organism are less efficient?

1. Multicellular animals
2. Multicellular plants
3. Colonial organisms
4. Unicellular organisms

Q. Assertion :Setae are absent in clitellum. Reason: Setae help in locomotion.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. In Pheretima, the segments without setae are

1. First, last and clitellar segments
2. Only clitellar segments
3. Only fourth segment
4. Only second segment

Q. Which of the following statement(s) is/are incorrect about a female frog?

i. Presence of vocal cords
ii. Development of copulation pad
iii. Ova is passed through the kidney to the cloaca

1. i and ii
   
2. ii and iii
   
3. iii alone
   
4. All of the above

Q.

1. 1st segment
2. last segment
3. clitellar segment
4. 20th-22nd segment

Q. Which of the following statement(s) is/are incorrect about a female frog?

i. Presence of vocal cords
ii. Development of copulation pad
iii. Ova is passed through the kidney to the cloaca

1. i and ii
   
2. ii and iii
   
3. iii alone
   
4. All of the above

Q. Which of the following statement(s) is/are incorrect about a female frog?

i. Presence of vocal cords
ii. Development of copulation pad
iii. Ova is passed through the kidney to the cloaca

1. i and ii
   
2. ii and iii
   
3. iii alone
   
4. All of the above

Q. In which of the following organisms is the cell considered to be equivalent to the organism?

1. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Unicellular prokaryotes
2. Unicellular eukaryotes
3. Multicellular eukaryotes
4. Both a and b

Q. Shedding of exoskeleton to replace it due to growth in body is called as

1. Moulting
2. Ecdysis
3. Both A and B
4. Molding