Options:
- A. Chemical
- B. Mechanical
- C. Photo
- D. Nociceptors
View Answer
B. Mechanical
Biology
Air contains __________ % of CO2 ?
Options:
- A. 0.02-0.03
- B. 0.03-0.04
- C. 0.04-0.05
- D. 0.05-0.06
View Answer
B. 0.03-0.04
Reduction in photosynthesis is of____________?
Options:
- A. O2
- B. CO2
- C. H2O
- D. light energy
View Answer
B. CO2
The most important photosynthetic pigment is ___________?
Options:
- A. Chlorophyll a
- B. Chlorophyll b
- C. Xanthophyll
- D. Carotenes
View Answer
A. Chlorophyll a
Oxygen contents per liter of air is____________?
Options:
- A. 10 ml
- B. 100 ml
- C. 200 ml
- D. 100ml
View Answer
C. 200 ml
Which of the following promotes growth in plants?
Options:
- A. Photorespiration
- B. Calvin cycle
- C. Both of these
- D. None of these
View Answer
B. Calvin cycle
In which of the following joint muscles are arranged in the same plane as that of joint?
Options:
- A. Between radius and ulna.
- B. Between ulna and scapula
- C. Between humerus and scapula
- D. Between femur and tibia.
View Answer
D. Between femur and tibia.
Rapid movement of leaves of mimosa on touching is an example of _____________?
Options:
- A. Turgor movement
- B. Nastic movement
- C. Tropic movements.
- D. Growth movement
View Answer
A. Turgor movement
Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.
Options:
- A. Binding sites of actin get attached to the myosin head.
- B. Troponin uncovers the actin binding sites.
- C. Tropomyosin gets removed from the binding sites of actin filaments.
- D. Ca2+ goes back inside sarcoplasmic reticulum.
View Answer
C. Tropomyosin gets removed from the binding sites of actin filaments.
Which of the following bones bones are present in the plam of hand?
Options:
- A. Carpals
- B. Metacarpals
- C. Phalanges
- D. Metatarsals
View Answer
B. Metacarpals