-
- Stems
- Leaves respire and utilize O2 and release CO2.
- Roots
- Branches
Sciences MCQs
Which of the following is an example of the living member of Psilopsida_____.
-
- Rhynia
- Psilotum
- Psilophyton
- Cooksonia
Production of pyrogens is a _____phenomenon?
-
- Destructive
- Protective
- Constructive
- Aggressive
Carrot is a source of_____.
-
- Vitamin B
- Vitamin A
- Vitamin C
- Vitamin D
So far over_____number of species of animals are known?
-
- 2 Million
- 3 Million
- 1 Million
- 2 Million
Which disease can be controlled by vaccination?
-
- Cancer
- Diabetes
- Measles
- Heart attack
Most of the marine invertebrates are_____.
-
- Osmoconformers
- Osmoregulators
- Both depend upon the concentration of sea water
- All of these
Sapwood is formed from_____.
-
- Primary xylem
- Primary phloem
- Secondary phloem
- Secondary xylem
Which of the following are motile zooids in cnidarians?
-
- Medusae
- Polyps
- Both of these
- All of these
The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is_____.
-
- High specific heat capacity
- High specific heat of vaporization
- Its Dipole nature
- Its liquid state