$I.$ methane
$II.$ carbon dioxide
$III.$ oxygen
$IV.$ ethane
Choose the correct option
- ✓$I$ and $II$
- B$I$ and $III$
- C$III$ and $IV$
- D$I, II$ and $III$
$I.$ methane
$II.$ carbon dioxide
$III.$ oxygen
$IV.$ ethane
Choose the correct option
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$I.$ use of biofertilisers and biopesticides
$II.$ crop rotation
$III.$ locally developed pest resistant varieties
Choose the correct option
$(a)$ It results in the formation of haploid gametes
$(b)$ Differentiation of gamete occurs after the completion of meiosis
$(c)$ Meiosis occurs continuously in a mitotically dividing stem cell population
$(d)$ It is controlled by the Luteinising hormone (LH) and FollicleStimulating Hormone (FSH) secreted by the anterior pituitary
$(e)$ It is initiated at puberty
Choose the most appropriate answer from the options given below:
$I$. Ovulation do not occur during the lactational period
$II$. Chances of the failure of contraception are almost nil upto six months following parturition
$III$. Side effects are almost nil
$IV$. It is a natural method of contraception
$V$. It increases phagocytosis of sperms