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- Question
Which of the following plays an important part in photosynthesis?
Options- A. Chloroplast
- B. Centrosome
- C. Tonoplast
- D. Nematoblast
- Correct Answer
- Chloroplast
ExplanationThe Chloroplast contains the wonder green pigment chlorophyll which is able to trap solar energy and use it for synthesis of food
- 1. Cretinism is due to the disorder of the glands
Options- A. Thymus
- B. Parathyroid
- C. Thyroid
- D. Adrenal Discuss
- 2. In electro - magnetic radiation, which of the following has greater wave - length than visible light
Options- A. Ultra -violet rays
- B. Infra - red rays
- C. Cosmic rays
- D. x-rays Discuss
- 3. The inner most membrane that covers the brain is
Options- A. Pleura
- B. Duramater
- C. Pia - mater
- D. Arachnoid membrane Discuss
- 4. The hormone that helps in the implantation of embryo
Options- A. Testosterone
- B. Insulin
- C. Prolactin
- D. Progesterone Discuss
- 5. The type of fracture where bone is broken at several places
Options- A. Complicated fracture
- B. Green stick fracture
- C. Impact fracture
- D. Comminuted fracture Discuss
- 6. The biogenetic law was proposed by
Options- A. Alfred Russel Wallace
- B. Charles Darwin
- C. Ernst von Haeckel
- D. Lamarck Discuss
- 7. The rate of heartbeat is accelerated by the harmone
Options- A. adrenaline
- B. acetylcholine
- C. thyroxine
- D. pituitrin Discuss
- 8. Food wrapped in news paper is likely to get contaminated by
Options- A. Magnesium
- B. Alluminium
- C. Lead
- D. Copper Discuss
- 9. In which of the following kind of organisms is the phenomenon found where in the female kills the male after copulation __________
Options- A. Drgonfly
- B. Honey bee
- C. Spider
- D. Pit viper Discuss
- 10. Which of the following is not an Endocrine Gland?
Options- A. Spleen
- B. Pituitary
- C. Thyroid
- D. Adrenal Discuss
Biology problems
Search Results
Correct Answer: Thyroid
Explanation:
Cretinism is a disease caused by hypothyroidism (less thyroxine formation) . The symptoms of the disease are retardation of mental, physical and sexual developments. potbelly, protruding tongue, dry skin etc are also indicative of this disease.
Correct Answer: Infra - red rays
Correct Answer: Pia - mater
Correct Answer: Progesterone
Correct Answer: Comminuted fracture
Correct Answer: Ernst von Haeckel
Explanation:
The biogenetic law states that ontogeny (study of development) repeats phylogeny (origin from previous group of racial history), The young one of the frog namely the tadpole is like a fish cosidered to be ancestral to frog.
Correct Answer: adrenaline
Explanation:
The hormone adrenaline also called epinephrine is known as a stress harmone. In emotional upset (like fear, anger etc.) this harmone is poured into the blood and it accelerates heart beat. The hormone acetylcholine decelerates heartbeat rate.
Correct Answer: Lead
Explanation:
It gets contaminated by lead
Correct Answer: Spider
Correct Answer: Spleen
Explanation:
Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct.
The major glands of the endocrine system include the
pineal gland,
pituitary gland,
pancreas,
ovaries,
testes,
thyroid gland,
parathyroid gland,
hypothalamus and
adrenal glands.
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