Directions: In the following Biology general knowledge questions, four answers are given, and only one answer is correct. Read the questions and choose the correct answers. If you want to check the answer, click on the answer button and know the correct answer with an explanation.
1. Which element increases the absorption of water and calcium in plants?
Answer: (d) Boron
Solution: Boron increases the absorption of water and calcium in the plants.
2. Angora wool is extracted from which animal?
Answer: (d) Rabbit
Solution: Angora wool comes from the fur of Angora rabbits. Angora is known for its softness, thin fibres and fluffiness. It is also known for its silky texture. It is much warmer and lighter than wool due to the hollow core of the angora fibre.
3. Which one of the following is a female sex hormone?
Answer: (d) Estrogen
Solution: Estrogen is the main sex hormone in women and is essential to the menstrual cycle. However, both men and women have this hormone, it is found in higher amounts in women, especially those capable of reproducing.
4. Which of the following is the largest living bird on earth?
Answer: (c) Ostrich
Solution: Ostrich is the largest living bird on earth. Today, ostriches are only found natively in African Jungle. An Ostrich can run at a speed of 70 km/h. They are the fastest birds on land.
5. Dehydration in the human body is caused due to the loss of ____?
Answer: (d) Water
Solution: Dehydration in the human body is caused due to the loss of water. Dehydration is the condition of a shortage of water in our body. Dehydration occurs by losing more fluid than you consume.