Radial symmetry is NOT found in adults of phylum:

NEET-2023 [Animal-Kingdom] [class-xi ]

• Echinodermata
• Ctenophora
• Hemichordata
• Coelenterata
Correct Option: C  [ Hemichordata ]

Remark:

Match List-I with List-II.

NEET-2023 [Animal-Kingdom] [class-xi ]

• A-II, B-I, C-IV, D-III
• A-I, B-II, C-III, D-IV
• A-I, B-II, C-IV, D-III
• A-III, B-II, C-IV, D-I
Correct Option: D  [ A-III, B-II, C-IV, D-I ]

Remark:

The unique mammalian characteristics are:

NEET-2023 [Animal-Kingdom] [class-xi ]

• pinna, monocondylic skull and mammary glands
• hairs, tympanic membrane and mammary glands
• hairs, pinna and mammary glands
• hairs, pinna and indirect development
Correct Option: C  [ hairs, pinna and mammary glands ]

Remark:

Select the correct statements with reference to chordates.
A. Presence of a mid-dorsal, solid and double nerve cord.
B. Presence of closed circulatory system.
C. Presence of paired pharyngeal gills
D. Presence of dorsal heart
E. Triploblastic pseudocoelomate animals.
Choose the correct answer from the options given below:

NEET-2023 [Animal-Kingdom] [class-xi ]

• C, D and E only
• A, C and D only
• B and C only
• B, D and E only
Correct Option: C  [ B and C only ]

Remark:

In which of the following animals, digestive tract has additional chambers like crop and gizzard?

NEET-2022 [Animal-Kingdom] [class-xi ]

• Corvus, Columba, Chameleon
• Bufo, Balaenoptera, Bangarus
• Catla ,Columba ,Crocodilus
• Pavo, Psittacula, Corvus
Correct Option: D  [ Pavo, Psittacula, Corvus ]

Remark:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): All vertebrates are chordates but all chordates are not vertebrates.
Reason (R): Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the option given below :

NEET-2022 [Animal-Kingdom] [class-xi ]

• Both (A) and (R) are correct and (R) is the correct explanation of (A)
• Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• (A) is correct but (R) is not correct
• (A) is not correct but (R) is correct
Correct Option: B  [ Both (A) and (R) are correct but (R) is not the correct explanation of (A) ]

Remark:

Match List-I with List-II.

NEET-2021 [Animal-Kingdom] [class-xi ]

• A-IV, B-III, C-I, D-II
• A-III, B-IV, C-I, D-II
• A-III, B-IV, C-II, D-I
• A-IV, B-I, C-II, D-III
Correct Option: C  [ A-III, B-IV, C-II, D-I ]

Remark:

Which one of the following organisms bears hollow and pneumatic long bones?

NEET-2021 [Animal-Kingdom] [class-xi ]

• Neophron
• Hemidactylus
• Macropus
• Ornithorhynchus
Correct Option: A  [ Neophron ]

Remark:

Match List-I with List-II.

NEET-2021 [Animal-Kingdom] [class-xi ]

• A-II, B-III, C-I, D-IV
• A-IV, B-I, C-III, D-II
• A-II, B-III, C-IV, D-I
• A-I, B-IV, C-III, D-II
Correct Option: C  [ A-II, B-III, C-IV, D-I ]

Remark:

Read the following statements.
A. Metagenesis is observed in Helminths.
B. Echinoderms are triploblastic and coelomate animals.
C. Round worms have organ-system level of body organization.
D. Comb plates present in ctenophores help in digestion.
E. Water vascular system is characteristic of Echinoderms.
Choose the correct answer from the options given below.

NEET-2021 [Animal-Kingdom] [class-xi ]

• C, D and E are correct
• A, B and C are correct
• A, D and E are correct
• B, C and E are correct
Correct Option: D  [ B, C and E are correct ]

Remark: