1. Change in genetic composition of a population is called as?
[A] extinction
[B] evolution
[C] endemic
[D] vicariance
Show Answer
Correct Answer: B [evolution]
Notes:
Evolution is change in the heritable characteristics of biological populations over successive generations. The theory of evolution is based on the idea that all species are related and gradually change over time.
2. Whch among the following are called scavengers of ecosystems?
[A] Bacteria
[B] Fungi & Bacteria
[C] Algae, Fungi & Bacteria
[D] None of the above
Show Answer
Correct Answer: B [Fungi & Bacteria]
Notes:
Fungi & Bacteria are called scavengers of ecosystems. Scavengers keep the ecosystem free of the bodies of dead animals, or carrion. They break down the dead organic material and recycle it into the ecosystem as nutrients.
3. Prophase, metaphase, anaphase & telophase are the stages of which of the following process?
[A] Mitosis / Meiosis
[B] Asexual reproduction
[C] sexual reproduction
[D] Cell metabolism
Show Answer
Correct Answer: A [Mitosis / Meiosis]
Notes:
Mitosis is a fundamental process for life. During mitosis, a cell splits to form two identical daughter cells by duplicating all of its contents, including its chromosomes. Prophase, metaphase, anaphase & telophase are the stages of
Mitosis.
4. Which among the following virus is also called as “Hit & Hide” Virus?
[A] RSV Virus (respiratory syncytial virus )
[B] Dengue virus
[C] Influenza virus
[D] HIV virus
Show Answer
Correct Answer: A [RSV Virus (respiratory syncytial virus )]
Notes:
RSV Virus (respiratory syncytial virus) is also called as “Hit & Hide” virus. It causes infections of the lungs and respiratory tract. It is a major cause of lower respiratory tract infections.
5. Which of the following places are main centers of silicosis and silico-tuberculosis diseases affecting the workers in India?
[A] Glass Factories
[B] Stone quarries and stone crushing factories
[C] Fireworks Factories
[D] Brick Kilns
Show Answer
Correct Answer: B [Stone quarries and stone crushing factories]
Notes:
Chronic exposure to silica increases workers risk of tuberculosis infection and aggravates pre-existing pulmonary tuberculosis. Therefore the workers working in the places like Stone quarries and stone crushing factories are mainly prone to silicosis and silico-tuberculosis diseases.
6. Which among the following is not rightly matched : (Ailments and affected parts of Body)
[A] Dermatitis – Skin
[B] Glossitis – Tongue
[C] Peritonitis – Abdomen
[D] Cystitis – Caecum
Show Answer
Correct Answer: D [Cystitis – Caecum]
Notes:
Cystitis is related to Bladder
7. Which among the following is a correct definition of Saprophytes?
[A] A parasitic plant that can complete its life cycle independent of a host
[B] A heterotrophic plant that feeds upon other living plants
[C] A heterotrophic plant that feeds upon dead organic matter
[D] A plant that is unable to synthesize a particular organic compound
Show Answer
Correct Answer: C [A heterotrophic plant that feeds upon dead organic matter]
Notes:
lysotrophic nutrition or Saprotrophic nutrition is a process of chemoheterotrophic extracellular digestion which is involved in the processing of decayed organic matter. It occurs in saprotrophs, and is most often associated with fungi and soil bacteria.
8. From which part, Coconut coir is obtained?
[A] Epicarp
[B] Mesocarp
[C] Endocarp
[D] Seed
Show Answer
Correct Answer: B [Mesocarp]
Notes:
Coir is the nature fibre obtained from mescocarp of the coconut fruit. Coconut fruit has three layers viz. Exocarp, MesoCarp and Endocarp. Exocarp is the outer green layer, Mesocarp is the fleshy, which becomes husk on drying middle layer and endocarp is the inner woody layer.
9. Which among the following diseases is very rare in women compared to the men affected with the same disorder?
[A] Osteoporosis
[B] Color blindness
[C] Nyctalopia
[D] Down Syndrome
Show Answer
Correct Answer: B [Color blindness]
Notes:
Color blindness diseases is very rare in women compared to the men affected with the same disorder. Color blindness often happens when someone is not able to distinguish between certain colors.
10. Which of the following diseases is spread by mosquitoes but is not a viral disease?
[A] Meningitis
[B] Dengue fever
[C] Yellow fever
[D] Filariasis
Show Answer
Correct Answer: D [ Filariasis]
Notes:
Filariasis is a parasitic disease caused by an infection with roundworms of the Filarioidea type. These are spread by blood-feeding black flies and mosquitoes. Meningitis is an inflammation of the protective membranes covering the brain and spinal cord known as the meninges. The inflammation may be caused by infection with viruses, bacteria or other microorganisms. Yellow fever is an acute viral disease. It is caused by the yellow fever virus and is spread by the bite of an infected female mosquito.
