Ova

Q. In human females, how many ova are released by the ovaries every month?

1. One
2. Two
3. Three
4. Four

Q.

Which organ in females produces gametes?

1. Oviduct

2. Uterus

3. Ova

4. Ovary

Q.

An egg usually has X chromosome, but in some cases it can have Y chromosome.

1. True

2. False

Q.

Each sperm is a single cell. State true or false.

1. True

2. False

Q.

What are the male gametes are called

Q.

An egg contains either X or Y chromosome and a sperm contains X chromosome.

1. True
2. False

Q.

(a) What are the female gametes in humans called ?

(b) Name the organs which produce female gametes.

Q. Which of the following is the female gamete?

1. Sperm
2. Ovaries
3. Ovum
4. Zygote

Q. How many eggs are produced by women in month and in a life span? [1 MARK]

Q. Question 2
In humans, the development of fertilized egg takes place in the

(a) Ovary
(b) Testis
(c) Oviduct
(d) Uterus

Q.

Which of the following is a haploid cell?

1. viviparous

2. oviparous

3. Skin cell

4. Vaginal cell

Q.

What are the only totipotent cells in humans?

Q. Question 23
Observe the figure given and answer the questions that follow.

(a) Label A and B.
(b) Identify the process.
(c) What happens during this process and what is formed?

Q. Statement 1: Ovary produces the female gamete.

Statement 2: Zygote is the female gamete.

1. Only statement 1 is correct.
2. Only statement 2 is correct.
3. Both the statements are correct.
4. Both the statements are incorrect.

Q. A tadpole develops into an adult frog by the process of _______.

1. fertilisation
2. metamorphosis
3. budding
4. fission

Q. Organisms in which male and female gametes are present in the same organism are called __________

Q. If a sperm with Y chromosome fuses with an egg, then the offspring will be .

1. male
2. female
3. unpredictable

Q. Cloning of an animal was successfully performed for the first time by Ian Wilmut and his colleagues at the Roslin Institute in Edinburgh, Scotland. They successfully cloned a sheep named Dolly. Dolly was born on 5th July 1996 and was the first mammal to be cloned. Cloning is:

1. The production of an exact copy from the gamete or zygote of a parent organism.
2. The production of an exact copy of a cell, any other living part, or a complete organism.
3. The production of a genetically non-identical copy of a cell, any other living part.
4. The production of a new plant from the vegetative part like roots, steams or flowers.

Q. A tadpole develops into an adult frog by the process of

1. Fertilization
2. Metamorphosis
3. Embedding
4. Budding

Q. Gametes are of same size and shape in all organisms.

1. True
2. False

Q.

The female gamete produced by the ovary is called ___. It is haploid in nature.

1. Sperm duct

2. Oviduct

3. Penis

4. Uterus

Q. What is present in an Ovule?

1. Egg cell
2. Pollen
3. Ovary
4. Embryo

Q. Where does the fertilized egg get implanted?

1. Uterus
2. Stomach
3. Oviduct
4. Cervix

Q. Human egg has a head, middle piece and tail.

Q.

Which of the following is/are haploid cell(s)?

1. viviparous

2. oviparous
3. Skin cell
4. Vaginal cell

Q.

two genetc combination of other play a significant role in determining the ex of newborn . explain

Q. The zygote divides repeatedly to form a mass of cells, known as

1. ovum
2. sperm
3. embryo
4. uterus

Q. The male gametes in human are produced by the ____.

1. penis
2. abdomen
3. seminal ducts
4. testes

Q. Haploid cells in males and females are known as and respectively.

1. sperm
2. ovum
3. embryo
4. zygote

Q. In human females, how many ova are released by the ovaries every month?

1. Two
2. Four
3. Three
4. One