MCQ
Trisomy (2n + 1) causes retardation in child, which is known as :
- APhiladelphia
- ✓Down's Syndrome
- CAlbinism
- DNone of these
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$I.$ Baculoviruses are pathogens that attack insects and other arthropods
$II.$ Most of these biocontrol agents belong to the genus Nucleopolyhedro virus
$III.$ They do not harm plants mammals, birds, fish and other non-target insects
$IV.$ Baculoviruses are helpful in Integrated Pest Management $(IPM)$ programme, in which beneficial insects are conserved
Choose the correct option
| Column$-I$ | Column$-II$ |
| $(a)$ Placenta | $(i)$ Androgens |
| $(b)$ Zona pellucida | $(ii)$ Human Chorionic Gonadotropin $(hCG)$ |
| $(c)$ Bulbo$-$urethral glands | $(iii)$ Layer of the ovum |
| $(d)$ Leydig cells | $(iv)$ Lubrication of the Penis |
$(a)\quad(b)\quad(c)\quad(d)$