CBSE
Multiple Choice QuestionsWhat do A, B, C and D represent?
A- Infundibulum; B- Fertilization; C- Myometrium; D- Morula
A- Infundibulum; B- Fertilization; C- Endometrium; D- Blastocyst
A- Isthmus; B- Fertilization; C- Myometrium; D- Blastocyst
A- Isthmus; B- Fertilization; C- Endometrium; D- Morula
Assertion: Corpus luteum is produced by Graafian follicle after ovulation.
Reason: It secretes estrogen which is necessary to maintain pregnancy.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Which animal has the longest gestation period?
Shark
Walrus
Elephant
Dog
In humans at the end of first meiotic division, the male germ cells differentiate into the
primary spermatocytes
secondary spermatocytes
spermatids
spermatogonia
Assertion : Parturition is induced by neural signal in maternal pituitary.
Reason : At the end of gestation period, the maternal pituitary release prolactin which causes uterine contractions.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Assertion: Now-a-days amniocentesis is banned.
Reason: Amniocentesis gives the information of any abnormality in the foetus and many other complications regarding pregnancy can be detected.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Which of the following statements is correct
Monkey, apes and humans exhibit estrous cycle.
Urine is pale yellow and slightly alkaline.
Lots of enzymes are present in bile juice.
Ovulation in humans is spontaneous.
Assertion: Extra oxygen consumption in human, body is known as oxygen debt.
Reason: The extra oxygen is required by the body to oxidise the accumulated lactic acid produced during strenuous exercise.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: In a regular medical examination of a small population, a 35 years old lady was found to have higher levels of oestrogens, progesterone in her blood.
Reason : The lady is 12 weeks pregnant.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are hue but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Acrosome reaction in sperm is triggered by
capacitation
release of lysin
influx of Ca++
release of fertilizin
