Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains:

NEET-2019 [Human-Reproduction] [class-xii ]

• Immunoglobulin A
• Macrophages
• Monocytes
• Natural killer cells
Correct Option: A  [ Immunoglobulin A ]

Remark:

Given below are two statements:

Statement I: The presence or absence of hymen is not a reliable indicator of virginity.

Statement II: The hymen is torn during the first coitus only.

In the light of the above statements, choose the correct answer from the options given below :

NEET-2024 [Human-Reproduction] [class-xii ]

• Statement I is true but Statement II is false
• 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
Correct Option: A  [ Statement I is true but Statement II is false ]

Remark: Explanation: NCERT Page No.30, (Topic-2.2 THE FEMALE REPRODUCTIVE SYSTEM)