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How do Organisms Reproduce?

10th Class - CBSE - Biology - 1163 Questions - 0 Concepts

Important Questions

Q1 Assertion & Reason Hard
ASSERTION

The endometrium undergoes cyclical changes during menstrual cycle.

REASON

The myometrium exhibits strong contractions during delivery of the baby.

  • A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  • B. Assertion is correct but Reason is incorrect
  • C. Both Assertion and Reason are incorrect
  • D. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Q2 Subjective Hard
Explain various special techniques used in assisted reproduction technologies(ART).

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Q3 Single Correct Hard
Though the total number of follicles in the ovaries of a normal young woman is about 4,00,00. The duration between menarche and menopause is limited. This is attributed to the
  • A. Liquor folliculi
  • B. Follicular proliferation
  • C. Follicular plasticity
  • D. Follicular atresia

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Q4 Single Correct Hard
Given below are the three statements each with two blanks. Select the option which correctly fills up the blank in any two statements. (A) Each seminiferous tubule is lined on Its inside by two types of cells called (i) and (ii) .
(B) The seminiferous tubules open into the  (i)  through  (ii).
(C) The enlarged end of penis called the   (i)   is covered by a loose fold of skin called the   (ii)  
  • A. (A)-(i)spermatogonia, (ii) follicular cells

    (B)-(i) vas deferens, (ii) urethral meatus
  • B. (A)-(i) spermatogonia, (ii) Sertoli cells

    (C)-(i) urethral meatus, (ii) scrotum
  • C. (A)-(i) spermatocytes, (ii) oogonia

    (B)-(i) rete testis, (ii) vasa efferentia
  • D. (B)-(i) vasa efferentia, (ii) rete testis

    (C)-(i) glans penis, (ii) foreskin

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Q5 Single Correct Hard
What is adrenarche?
  • A. Early sexual maturation due to increased level of androgen.
  • B. Early sexual maturation due to low level of androgen.
  • C. Increased level of adrenaline hormone.
  • D. Increased level of nor-adrenaline hormone.

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Q6 Subjective Hard
How does yeast produce asexually? Show it diagrammatically.

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Q7 Single Correct Hard
External budding is present in
  • A. Sycon
  • B. Spongilla
  • C. Hydra
  • D. Both A and C

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Q8 Single Correct Hard
The product of sexual reproduction generally produces
  • A. Longer viability of seeds
  • B. Prolonged dormancy
  • C. Large biomass
  • D. New genetic combination leading to variation

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Q9 Subjective Hard
Short / Long Answer question Type :
Write short notes on Menarche

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Q10 Single Correct Hard
Progesterone, ovulation, 28 days, puberty, menarche, 45-50 years, menopause, fallopian tube, 13$$^{th}$$ or 14$$^{th}$$ days
Fill in the blanks using the given words.
Menstrual cycle is a series of cyclic changes that occur in the reproductive system of human females with a periodicity of about ..........(1) ...........
The cycle begins with ..........(2)...........
The first menstruation is called as ..........(3) ...........
It stops between age of .........(4) ............
Stoppage of menstruation permanently is called as ........(5) .............
At about the middle of the menstrual cycle on .........( ) ..........., the growing follicle bursts and mature ovum is released from the ovary under the influence of higher levels of estrogen and LH.
The phenomenon is called as .........(7)..............
The empty follicle grows into corpus luteum that secretes hormone ........... (8) ..........
The released ovum is drawn into ..................(9) ...................... with the help of inward lashing movements of its internal cilia.
It rests for 1-2 days in the ampulla.
The period is called as fertility period.
Pregnancy can occur only during this phase.
  • A. (1)- 28 days, (2)- puberty, (3)- menarche, (4)- 45-50 years, (5)- menopause, (6)- 13$$^{th}$$ or 14$$^{th}$$ days, (7)- fallopian tube, (8)- progesterone, (9)- ovulation
  • B. (1)- 28 days, (2)- puberty, (3)- menarche, (4)- 13$$^{th}$$ or 14$$^{th}$$ days, (5)- menopause, (6)- 45-50 years, (7)- fallopian tube, (8)- progesterone, (9)- ovulation
  • C. (1)- 28 days, (2)- puberty, (3)- menopause, (4)- 13$$^{th}$$ or 14$$^{th}$$ days, (5)- menarche, (6)- 45-50 years, (7)- fallopian tube, (8)- progesterone, (9)- ovulation
  • D. (1)- 28 days, (2)- puberty, (3)- menarche, (4)- 45-50 years, (5)- menopause, (6)- 13$$^{th}$$ or 14$$^{th}$$ days, (7)- ovulation, (8)- progesterone, (9)- fallopian tube

Asked in: Biology - How do Organisms Reproduce?


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