When the gamete cells of two individuals combine during sexual reproduction, they form
(A) Fetus
(B) Endosperm
(C) Zygote
(D) Egg
During sexual reproduction, two haploid gametes combine into one diploid cell known as a zygote in a process called fertilization. The nuclei from the gametes fuse, and each gamete contributes half of the genetic material of the zygote.
The development of the child inside the mother's body (in the case of humans) takes about a month.
(A) 10
(B) 9
(C) 7
(D) 8
The development of the child inside the mother's body takes approximately eleven months.
Which one of the following is a specific type of milk that is produced in a lactating mother and is essential for the development of an immune response in a human newborn?
(A) Transitional Milk
(B) Skimmed Milk
(C) Neonatal (Colostrum)
(D) Milk produced in breast one month after the birth of the baby
Colostrum is the first form of breastmilk that is released by the mammary glands after giving birth. It's nutrient-dense and high in antibodies and antioxidants to build a newborn baby's immune system. It changes to breast milk within two to four days after your baby is born.
Which hormone causes milk to be released from the breast during lactation?
(A) Estrogen
(B) Prolactin
(C) Oxytocin
(D) Progesterone
Prolactin is necessary for the secretion of milk by the cells of the alveoli. The level of prolactin in the blood increases markedly during pregnancy, and stimulates the growth and development of the mammary tissue, in preparation for the production of milk (19).
Which one of the following is not a component of the human male reproductive system?
(A) Seminal Vesicle
(B) Uterus (Cervix)
(C) Urethra
(D) Vas Deferens
The correct answer is Cervix. Cervix is not a component of the human male reproductive system. Cervix facilitates the passage of sperm into the uterine cavity.
Which of the following is a modified column?
(A) Carrot
(B) Sweet potato
(C) Coconut
(D) Potato
Some plants like potato, turmeric, garlic, ginger and sugarcane store food material in the stem due to which the stem bulges in size. Hence, these plants are categorized as plants with modified stems.
Which is the edible part of pomegranate?
(A) Endosperm
(B) Juicy seeds of Bahrachol
(C) Fleshy inflorescence
(D) Fleshy Seed Chola
In the fruit of pomegranate, the seed coat is the edible part. This seed coat is modified and has fleshy testa which is juicy and can be eaten. In pomegranate fruit, the outer hard layer is made up of exocarp and also mesocarp partially, as it is also associated with the formation of septa in the fruit.
Transpiration is beneficial for plants because it?
(A) Reduces water retention in the soil
(B) Evaporates excess water
(C) Produces a drag in water plants to climb up
(D) None of the above
At the same time, plant transpiration provides evaporative cooling, forming a major component of the leaf energy balance. Transpiration also provides the driving force for transport of water and nutrients from roots to shoots.
Nyctalopia, more commonly known as Night Blindness, is caused by the deficiency of which nutrient?
(A) Vitamin C
(B) Magnesium
(C) Potassium
(D) Vitamin A
1. Nyctalopia (night blindness) is caused by deficiency of Vitamin A.
2. Foods rich in Vitamin A are carrots, spinach, sweet potatoes, lettuce, etc.
3. Vitamin A deficiency can cause damage to rod cells, which reduces the ability to see in low light.
From which part of the plant turmeric is obtained?
(A) Root
(B) Fruit
(C) Flowers
(D) Stem
Turmeric is the underground stem of a ginger-like plant (rhizome).
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