MCQ
Bisexual flowers which never open, demonstrate
- ✓Cleistogamy
- BAllogamy
- CAutogamy
- DNone of these
This condition is called cleistogamy e.g., Commelina bengalensis, Oxalis, Viola, etc.
The cleistogamous flower are bisexual small, inconspicious, colourless and do not secrete nectar.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Statement $I$: Gause's competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely.
Statement $II$: According to Gause's principle, during competition, the inferior will be eliminated. This may be true if resources are limiting.
In the light of the above statements, choose the correct answer from the options given below :
What does $A$ and $B$ refer here?
| Column-$I$ (Scientists) | Column-$II$ (Discovery) |
|
$A$. Ernst Mayr |
$I$. Discovered Viroids |
| $B$. Whittaker | $II$. Gave the name virus |
| $C$. Ivanowsky | $III$. Proposed five kingdom classification |
| $D$. Diener | $IV$. Evolutionary biology |