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Life begin in all sexually reproducing o...

Life begin in all sexually reproducing organisms as a

A

single-celled zygote

B

double-celled zygote

C

haploid zygote

D

haploid gametes.

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Verified by Experts

The correct Answer is:
A
Every sexually reproducing organism, including human being begin life as a signel called zygote.
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Zygote in sexually reproducing organisms

Which one of the following is the first cell of the new generation in all sexually reproducing organisms?

A: Zygote is the first cell of the new ganeration in all sexually reproducing organisms. R: Cell division and cell differenttiation are the stages of embryogenesis. R: Cell division and cell differentiation are the stages of embrygenesis.

Which of the following feature is universal in all sexually reproducing rganisms ?

Assertion : Isogametes are formed in majority of sexually reproducing organisms. Reason : Morphologically distinct type of gametes are called isogametes.

State true or false In most of the sexually reproducing organisms isogametes are formed

Assertion:Meiosis ensures the production of haploid phase in the lifecycle of sexually reproducing organisms. Fertilisation restores th diploid phase.

Why is meiosis essential in sexually reproducing oraganisms?

NCERT FINGERTIPS-REPRODUCTION IN ORGANISM-Reproduction In Organism
  1. Zygote of an oranism developed after syngamy undergoes meiosis to form...

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  2. Statement 1 : Zygote is the vital link between two generations. Stat...

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  3. Life begin in all sexually reproducing organisms as a

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  4. Read the following statements about embryogenesis and select the incor...

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  5. Which of the following is not correct regarding sexual reproduction ?

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  6. Offsprings of oviparous animal are at greater risk of survival as comp...

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  7. Which of the following statements is not correct regarding oviparous a...

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  8. Deposition of calcareous shell around zygote occurs in

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  9. Read the following statements and select the correct option. Stateme...

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  10. Select the option which shows viviparous animals only.

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  11. Which of the following animals give birth to young ones ?

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  12. Viviparity is found in

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  13. In these animals, the female retain the eggs inside its body after fer...

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  14. In which of the following plants, sepals do not fall off after fertill...

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  15. Which of the labelled parts in the transverse section of tomato fruit,...

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  16. Refer to the transverse section of ovary of mustard plant identify X a...

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  17. The wall of the ovary forms

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  18. Grafting is the union between two plants of closely related varieties....

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  19. Given figures illustrate.

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  20. A dandelion produces seeds without meiosis or fertillisation. The adu...

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