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- Question
Hardest Part of the Human Body?
Options- A. Tooth Enamel
- B. Femur
- C. Temporal bone of skull
- D. Knee bone
- Correct Answer
- Tooth Enamel
ExplanationTooth Enamel is the hardest and most highly mineralized substance in the human body. It is a tissue and not a bone. This tissue has high mineral content which makes it hardest substance.
Femur and Temporal bone of the skull are the hardest bones of the human body.
- 1. Which of the following is an Autotroph?
Options- A. Fish
- B. Algae
- C. Butterfly
- D. Mushroom Discuss
- 2. Silviculture is the branch of botany in which we study about
Options- A. Culture of algae
- B. Development of forest
- C. Culture of fungi
- D. Silciphida plant Discuss
- 3. Which one of the following vitamins is known as the anti sterile factor ?
Options- A. Ascorbic acid
- B. Riboflavin
- C. Niacin
- D. Retinol Discuss
- 4. The sex of a newborn baby is determined by the chromosome inherited from
Options- A. The Father
- B. The Mother
- C. The Father's Father
- D. Both A & B Discuss
- 5. The rate of heartbeat is accelerated by the hormone
Options- A. adrenaline
- B. acetylcholine
- C. thyroxine
- D. pituitrin Discuss
- 6. Only male frog produce croacking sound because ____
Options- A. Female frog have no larynx
- B. Female frog have larynx but no vocal cord
- C. Male frog have three pair of vocal cord
- D. Male frog can magnify their voice with the help of sound box Discuss
- 7. Which of the following is a mixed gland
Options- A. Pituitary
- B. Adrenal
- C. Pancreas
- D. Ovary Discuss
- 8. Nuclear membrane is absent in
Options- A. Volvox
- B. Penicillium
- C. Agaricus
- D. Nostoc Discuss
- 9. Which part of Nervous system controls involuntary actions
Options- A. Medulla oblongata
- B. Cerebellum
- C. Hypothalamus
- D. Spinal cord Discuss
- 10. The Vitamin required for the synthesis of nucleic acid is
Options- A. Tocoferorl
- B. Folic acid
- C. Cyanocobalamine
- D. Riboflavin Discuss
Biology problems
Search Results
Correct Answer: Algae
Explanation:
Here from the above options, Algae is an Autotroph.
Autotrophs :
An Autotroph is also called as Producer, is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.
Correct Answer: Development of forest
Correct Answer: Riboflavin
Correct Answer: The Father
Correct Answer: adrenaline
Explanation:
The hormone adrenaline also called epinephrine is known as a stress hormone. In emotional upsets( like fear, anger etc.) this hormone is poured into the blood and it accelerates heart beat. The hormone acetylcholine decelerates heartbeat rate.
Correct Answer: Female frog have no larynx
Correct Answer: Pancreas
Correct Answer: Nostoc
Correct Answer: Medulla oblongata
Correct Answer: Folic acid
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