Which one of the following four plant families has the largest number of species?
Rosaceae
The question asks us to identify which among the four listed plant families contains the largest number of species. To answer this, we need to consider the approximate number of known species within each family.
Let's look at the families provided and their estimated species counts:
| Plant Family | Approximate Number of Species |
|---|---|
| Brassicaceae | Around 3,000 to 4,000 species |
| Cucurbitaceae | Around 900 to 1,000 species |
| Cactaceae | Around 1,500 to 2,000 species |
| Rosaceae | Around 4,000 to 4,800 species |
Comparing the approximate numbers, we can see:
Based on these estimates, the Rosaceae family has the largest number of species when compared to Brassicaceae, Cucurbitaceae, and Cactaceae.
Which one of the following fossils is no longer considered to be a true vascular plant based on the structure of the secondary thickening of the conducting elements?
Select the correct former name for The International Code of Nomenclature (ICN) which was changed as part of the Melbourne code.
Based on the reported estimates of biodiversity in India, select the correct option that represents the decreasing order of total number of species reported in these taxa.
Select the rare or endangered species which also have exceptionally low genetic variability, as documented by multi-locus molecular methods.
Given below are the list of some of the most rare species on our planet (Column X) and the regions of the world where they occur (Column Y).
Column X Name of the organism | Column Y Region of occurrence | ||
A. | Saola | i. | Tianshan mountains |
B. | Ili Pika | ii. | Vietnam |
C. | Greater Bamboo Lemur | iii. | Sahara Desert |
D. | Addax | iv. | Madagascar |
Which one of the following options represents all correct matches between Column X and Column Y?