MCQ
Most diverse organisms of an ecosystem are
- AProducers
- BConsumers
- CCarnivores
- ✓Decomposers
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$B.$ Humans are $\ldots \ldots$
$C.$ Fertilization is .... in humans
$D.$ Male and female gametes are.....
$E.$ Zygote is.....
$F.$ The process of release of ovum from a mature follicle is called.....
$G.$ Ovulation is induced by a hormone called ......
$H.$ The fusion of male and female gametes is called.......
$I.$ Zygote divides to form... which is implanted in uterus
$J.$ The structure which provides vascular connection between foetus and uterus is called......
Blanks in the statements $A$ to $J$ in the above statement is
$I.$ Ladybirds and dragonflies are used to get rid of aphids and mosquitoes
$II.$ The bacteria Bacillus thuringiensis $(B t)$ are used to control butterfly caterpillars
$III.$ Trichoderma sp. free living fungi, are present in root ecosystems where they act against several plant pathogens
$IV.$ Rhizobium is a symbiotic bacterium that lives in the stem of legumes
Which of the statements given above are correct?