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:

Given below are two statements:
Statement I: Ligaments are dense irregular tissue
Statement II: Cartilage is dense regular tissue.
In the light of above statements choose the correct answer from the option given below:

NEET-2023 Structural-Organisation-in-Animals [class-xi ]

• Statement I is false but Statement III is true.
• Both Statement I and II are true
• Both Statement I and II are false
• Statement I is true but Statement II is false
Correct Option: C  [ Both Statement I and II are false ]

Remark:

Which of the following are NOT considered as the part of endomembrane system?
A. Mitochondria
B. Endoplasmic Reticulum
C. Chloroplasts
E. Peroxisomes
D.Golgi complex
Choose the most appropriate answer from the options given below:

NEET-2023 cell-the-unit-of-life [class-xi ]

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

Remark:

Which of the following functions is carried out by cytoskeleton in a cell?

NEET-2023 cell-the-unit-of-life [class-xi ]

• Transportation
• Nuclear division
• Protein synthesis
• Motility
Correct Option: D  [ Motility ]

Remark:

Given below are two statements:
Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat. Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.
In the light of the above statements, choose the correct answer from the options given below:

NEET-2023 Biomolecules [class-xi ]

• Statement I is false but statement II is true.
• Both Statement I and Statement II are true.
• Both Statement I and Statement II are false.
• Statement I is true but Statement II is false.
Correct Option: B  [ Both Statement I and Statement II are true. ]

Remark:

Given below are two statements:
Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal)
Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of α type and two subunits of β type.)
In the light of the above statements, choose the correct answer from the options given below:

NEET-2023 Biomolecules [class-xi ]

• Statement I is false but Statement II is true.
• Both Statement I and Statement II are true.
• Both Statement I and Statement II are false.
• Statement I is true but Statement II is false.
Correct Option: A  [ Statement I is false but Statement II is true. ]

Remark:

Match List-I with List-II.

NEET-2023 Digestion-and-Absorption [class-xi ]

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

Remark:

Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by:

NEET-2023 Digestion-and-Absorption [class-xi ]

• Pyloric sphincter
• Sphincter of Oddi
• Ileo-caecal valve
• Gastro-oesophageal sphincter
Correct Option: C  [ Ileo-caecal valve ]

Remark:

Vital capacity of lung is ________.

NEET-2023 Breathing-and-Exchange-of-Gases [class-xi ]

• IRV + ERV + TV
• IRV + ERV
• IRV + ERV + TV + RV
• IRV + ERV + TV – RV
Correct Option: A  [ IRV + ERV + TV ]

Remark: