MCQ
The cells without nuclei are present in
- AVascular cambium
- BRoot hair
- CCompanion cell
- ✓Members of sieve tube
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$R$ : These cells are involuntary in function.
$I.$ Insulin $II.$ Epinephrine $III.$ Oestradiol $IV.$ Norepinephrine $V$. Testosterone $VI$. Glucagon
| Genus name | Two characters | Class/Phylum | |
| $(a)$ | Ascaris | $(i)$ Body segmented | Annelida |
| $(ii)$ Males and females distinct | |||
| $(b)$ | Salamandra | $(i)$ A tympanum represents ear | Amphibia |
| $(ii)$ Fertilization is external | |||
| $(c)$ | Pteropus | $(i)$ Skin possesses | Mammalia |
| $(ii)$ Oviparous | |||
| $(d)$ | Aurelia | $(i)$ Cnidoblasts | Coelenterata |
| $(ii)$ Organ level of organization |