Which of the following are most suitable indicators of SO2 pollution in the environment?
1. Lichens
2. Conifers
3. Algae
4. Fungi
1. Lichens
2. Conifers
3. Algae
4. Fungi
Grafted kidney may be rejected in a patient due to?
1. Humanol immune response
2. Cell-mediated immune response
3. Passive immune response
4. Innate immune response
Which of the following diseases is caused by a protozoan?
1. Syphilis
2. Influenza
3. Babesiosis
4. Blastomycosis
In human females, meiosis-II is not completed until?
| 1. | Puberty | 2. | Fertilization |
| 3. | Uterine implantation | 4. | Birth |
Male gametophyte in angiosperms produces?
1. Two sperms and a vegetative cell
2. Single sperm and a vegetative cell
3. Single sperm and two vegetative cells
4. Three sperms
Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:
| 1. | AV valves open up |
| 2. | Ventricular walls vibrate due to the gushing of blood from the atria |
| 3. | Semi-lunar valves close down after the blood flows into vessels from the ventricles |
| 4. | AV node receives a signal from SA node |
Auxin can be bioassayed by?
1. Avena coleoptiles curvature
2. Hydroponics
3. Ptometer
4. Lettuce hypocotyl elongation
Satellite DNA is important because it:
| 1. | Codes for proteins are needed in the cell cycle. |
| 2. | Shows a high degree of polymorphism in the population and also the same degree of polymorphism in an individual which is inheritable from parents to children. |
| 3. | Does not code for proteins and is the same in all members of the population. |
| 4. | Codes for enzymes needed for DNA replication. |
Cellular organelles with membranes are:
1. Nucleus, ribosome and mitochondria
2. Chromosomes, ribosomes and endoplasmic reticulum
3. Endoplasmic reticulum, ribosome and nuclei
4. Lysosomes, Golgi apparatus and mitochondria
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