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- Question
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
- Correct Answer
- The Father
- 1. The rate of heartbeat is accelerated by the hormone
Options- A. adrenaline
- B. acetylcholine
- C. thyroxine
- D. pituitrin Discuss
- 2. Vivipary is defined as germination
Options- A. during storage
- B. within the fruit
- C. with cotyledons coming out of soil
- D. with cotyledons remaining inside the soil Discuss
- 3. Dicotyledonous weeds are destroyed by a chemical called
Options- A. Indole - acetic acid
- B. 2- 4 dichlorophenoxy acetic acid
- C. Abscisic acid
- D. Naphthalene acetic acid Discuss
- 4. The gland that is present close to Trachea
Options- A. Pancreas
- B. Liver
- C. Adrrenal
- D. Thyroid Discuss
- 5. Total salt content in blood is about
Options- A. 1.85 to 1.9%
- B. 11.85 to 11.9%
- C. 2.85 to 2.9%
- D. 0.85 to 0.9% Discuss
- 6. Which one of the following vitamins is known as the anti sterile factor ?
Options- A. Ascorbic acid
- B. Riboflavin
- C. Niacin
- D. Retinol Discuss
- 7. 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
- 8. Which of the following is an Autotroph?
Options- A. Fish
- B. Algae
- C. Butterfly
- D. Mushroom Discuss
- 9. Hardest Part of the Human Body?
Options- A. Tooth Enamel
- B. Femur
- C. Temporal bone of skull
- D. Knee bone Discuss
- 10. 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
Biology problems
Search Results
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: within the fruit
Explanation:
Vivipary means germination even when attached to the mother plant. Usually the saline marsh plants (Halophytes) have their seeds growing even when they are inside the fruits attached to the tree.
Correct Answer: 2- 4 dichlorophenoxy acetic acid
Correct Answer: Thyroid
Correct Answer: 0.85 to 0.9%
Correct Answer: Riboflavin
Correct Answer: Development of forest
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: Tooth Enamel
Explanation:
Tooth 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.
Correct Answer: Female frog have no larynx
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