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- Question
Which of the following is a characteristic of all angiosperms?
Options- A. double internal fertilization
- B. ovules that are not contained within ovaries
- C. complete reliance on wind as the pollinating agent
- D. free-living gametophytes
- Correct Answer
- double internal fertilization
ExplanationThe flowering plants, also known as angiosperms, Angiospermae or Magnoliophyta, are the most diverse group of land plants. These are also seed producing plants like gymnosperms. In Angiosperms seeds are in flowers.
- 1. The vitamin D deficiency disease in adults is known as
Options- A. Hypovitaminosis D
- B. Avitaminosis
- C. Scorbutus
- D. Petechiae Discuss
- 2. Increasing the Alveolar ventilation rate will
Options- A. Increase the rate of carbon dioxide diffusion from the blood to the alveoli
- B. Decrease the partial pressure of oxygen in the alveoli
- C. Increase the partial pressure of carbon dioxide in the alveoli
- D. Have no effect on either partial pressure or diffusion rate of gases Discuss
- 3. Which organelles supply energy to the cell?
Options- A. Mitochondria
- B. Cytoplasm
- C. Ribosomes
- D. None of the above Discuss
- 4. Which of the following organs do not have blood vessels?
Options- A. Spleen
- B. Cornea
- C. Liver
- D. None of the above Discuss
- 5. Which of the following statements about vitamins is true?
Options- A. Vitamins have a small caloric value
- B. Vitamins can serve as an energy supply for the body if certain criteria are met
- C. Like protein and some minerals, vitamins contribute to the structure of the body
- D. Vitamins are indispensable for the maintenance of optimal health Discuss
- 6. Select the correct statement about active and passive immunity.
Options- A. A vaccination is an example of the introduction of passive immunity into the body
- B. Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies
- C. Immunological memory is established by passive immunization
- D. The antibodies utilized in active immunity are acquired from another organism Discuss
- 7. Visceral pain usually starts in which of the following?
Options- A. Kidneys
- B. Abdomen
- C. Rectum
- D. Esophagus Discuss
- 8. Dynamic equilibrium receptors are found in the
Options- A. Vestibule
- B. Maculae
- C. Semicircular Canals
- D. Cupula Discuss
- 9. Which blood group is called universal donor?
Options- A. AB-
- B. O-
- C. AB+
- D. O+ Discuss
- 10. A dissecting aortic aneurysm occurs when
Options- A. The inner layers of the aorta become separated
- B. The aorta ruptures, resulting in profound bleeding
- C. All layers of the aorta suddenly contract
- D. None of the above Discuss
Biology problems
Search Results
Correct Answer: Hypovitaminosis D
Explanation:
Vitamin D also known as Sunshine vitamin is produced in the body when our skin is exposed to sunlight. Its deficiency leads to a disease in which bone tissue doesn't properly mineralize leading to soft bones. The vitamin D deficiency disease in adults is known as Hypovitaminosis D.
Correct Answer: Increase the rate of carbon dioxide diffusion from the blood to the alveoli
Explanation:
Increasing the Alveolar ventilation rate will increase the rate of carbon dioxide diffusion from the blood to the alveoli.
Correct Answer: Mitochondria
Explanation:
Mitochondria which is present in both plant and animal cells supplies energy to the cells and hence called as the powerhouse of the cell.
Correct Answer: Cornea
Explanation:
Corneas are only tissues that don?t have blood vessels. Tissues are the level cellular organization in the human body which lies between cells and a complete organ. Tissues of similar cells group together to form an organ.
There are four types of tissues. They are :
Epithelial,
Connective,
Muscular, and
Nervous tissue.
Correct Answer: Vitamins are indispensable for the maintenance of optimal health
Explanation:
Vitamins are indispensable for the maintenance of optimal health is the only statement that is true about vitamins.
Correct Answer: Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies
Correct Answer: Abdomen
Explanation:
Visceral pain is a poorly localized, dull, or diffuse pain. It usually arises from the abdominal organs.
Correct Answer: Semicircular Canals
Explanation:
Dynamic equilibrium receptors are found in the Semicircular Canals. It monitors angular or rotational movements of the head when the body ismoving, such as a figure skater?s spinning, but maintaining balance.
Correct Answer: O-
Explanation:
O- blood group is called universal donor. AB+ is called as universal acceptor.
Correct Answer: The inner layers of the aorta become separated
Explanation:
A dissecting aortic aneurysm occurs when the inner layers of the aorta become separated.
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