MCQ
Progeny produced as a result of cross pollination
- ✓Shows high degree of variability and is evolutionary important
- BIs sterile
- CHas recessive characters
- DIs homozygous with phenotypic uniformity
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$I.$ Initiates flowering in pineapples
$II.$ Induces flowering in mango
$III.$ Root growth and root hair promotion
$I, II, III$
$I$. There are no favourable seasons in tropics
$II$. Less solar energy is available in tropics
$III$. Rate of extinction is low in tropics
$IV$. Resource availability is higher in tropics
Choose the correct option
$R$ : All biotic and abiotic factors are managed by humans in these ecosystems.
| Column $I$ | Column $II$ |
| $A.$ Synapsis aligns homologous chromosomes | $(i)$ Anaphase $II$ |
| $B.$ Synthesis of $RNA$ and protein | $(ii)$ Zygotene |
| $C.$ Action of enzyme recombinase | $(iii)$ $G_2$ phase |
| $D.$ Centromeres do not separate but chromatids move towards opposite poles | $(iv)$ Anaphase $I$ |
| $(v)$ Pachytene |