MCQ
The genotype of $B$ group father of an $O$ group child is:
- A$\text{I}^\circ\text{I}^\circ$
- B$\text{I}^\text{B}\text{I}^\text{B}$
- C$\text{I}^\text{A}\text{I}^\text{B}$
- ✓$\text{I}^\circ\text{I}^\text{B}$
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$A$. Lenticels are the lens-shaped openings permitting the exchange of gases.
$B$. Bark formed early in the season is called hard bark.
$C$. Bark is a technical term that refers to all tissues exterior to vascular cambium.
$D$. Bark refers to periderm and secondary phloem.
$E$. Phellogen is single-layered in thickness.
Choose the correct answer from the options given below:
The $R.Q$ of above reaction is
$(i)$ They are saprophytic protists.
$(ii)$ Under suitable conditions, they form an aggregation (called plasmodium) which may grow and spread over several feet.
$(iii)$ During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.
Which of the following class of protists is being described by the above statements