EASY
NEET
IMPORTANT
Earn 100

Choose the correct sequence of ducts of mammary glands from areola towards alveoli.

50% studentsanswered this correctly

Important Questions on Human Reproduction

MEDIUM
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 91
Identify the wrong statement.
EASY
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 92
Which is not normally observed in colostrum?
EASY
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 93
The embryo with 8 to 16 blastomeres is called a:
EASY
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 94
Receptors for sperm binding in mammals are present on:
EASY
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 95
The sex of the fetus will be decided at
MEDIUM
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 96
Mark the wrong statement.
HARD
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 97
The sperm and the egg make different contributions to the zygote. Which of the following statements about their contributions are true?
(i) Sperm contributes most of the mitochondria.
(ii) Egg contributes most of the cytoplasm.
(iii) Both sperm and egg contribute haploid nucleus.
(iv) Both sperm and egg contribute centrioles.
MEDIUM
NEET
IMPORTANT
Biology Crash Course NEET>Chapter 25 - Human Reproduction>Level 1>Q 98

Fill up the blanks in the following paragraph by selecting the correct option.

During copulation (coitus), semen is released by the penis into the vagina and is called _______(i)_______. The ovum released by the ovary is transported to the _______(ii)_______ where _______(iii)_______ takes place. During fertilization, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of _______(iv)_______. The secretions of the _______(v)_______ help the sperm enter into the cytoplasm of the ovum.