Chromosomes

Q.

Mother is responsible for the sex of the baby.

1. True

2. False

Q. Why is the nucleus called the control room of the cell?

Q.

What is a SAT chromosome?

Q.

The average gene consist of __________ bases.

1. 300

2. 30000

3. 3000

4. 1000

Q. How is the genetic information carried in DNA?

Q.

Is nucleus double membrane?

Q. Assertion (A): Chromosomes are responsible for the transfer of characteristics from parents to offspring.

Reason (R): Chromosomes are present in the nucleus.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Q.

Why Nucleus is responsible for transmission of characters from parents to off Springs?

Q.

In a living cell, chromatin is present in :

1. Cytoplasm

2. Vacuole

3. Chloroplasts

4. Nucleus

Q.

Match the following

nucleus. Cell wall

plastid Vacuole

plant cell Nucleolus

cytoplasm Chlorophyll

eukaryotes. Pseudopodia

Nuclear membrane

Q.

A cell organelle commonly called suicide bag is

1. Nucleus

2. Lysosome

3. Chloroplast

4. Ribosome

Q. Which is responsible for transfer of characters gene or DNA?

Q.

What is the role of the nucleus?

Q.

Which among the following sequences is correct in describing the genetic material present in the nucleus from the most basic to the most complex?

1. $\mathrm{Nucleus}\to \mathrm{Gene}\to \mathrm{Chromosome}$
2. $\mathrm{Gene}\to \mathrm{Nucleus}\to \mathrm{Chromosome}$
3. $\mathrm{Gene}\to \mathrm{Chromosome}\to \mathrm{Nucleus}$
4. $\mathrm{Chromosome}\to \mathrm{Nucleus}\to \mathrm{Gene}$

Q.

Why is nucleus referred to as the controller of cellular activities?

Q. The chromosomes carry _____ and help in inheritance or transfer of characters from the parents to the offspring.

1. genes
2. RNA
3. Spindle fibre
4. All of these

Q. When the cell is at the resting stage, DNA exists in the form of .

1. chromatin
2. chromosome
3. nucleus

Q.

What are alleles? What is the difference between alleles and genes? Are alleles parts of a gene?

Q. State whether the following statements are true or false:​
(d) A zygote is formed as a result of fertilisation.​

Q.

The structures present in a cell which is responsible for determination of the sex of a baby is a

1. Cytoplasm

2. Cell membrane

3. Nucleus

4. Chromosome

Q. When the cell is at the resting stage, DNA exists in the form of .

1. chromatin
2. chromosome
3. nucleus

Q. If your father has brown eyes, you may also have brown eyes. If your mother has curly hair, you might also end up having curly hair. This transfer of characteristics is due to the transfer of ______.

1. chromosomes
2. chloroplasts
3. mitochondria
4. lysosomes

Q. Statement 1: Chromosomes are thread-like structures.

Statement 2: Chromosomes are involved in the transfer of characteristics from parents to offsprings.

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

Q.

Name the network of fibrous material contained in the nucleus.

Q.

Question 03(iii)
The number of nuclei present in a zygote is _______.

Q.

In which of the following organisms the nuclear material is not bound by a membrane?

1. Humans

2. Bacteria

3. Fungi

4. Amoeba

Q.

What forms chromosomes?

Q. Which of the following is absent in an animal cell?

1. Nucleus
2. Cytoplasm
3. Cell wall
4. Cell membrane

Q. Centrioles help in cell division in animals.

1. False
2. True

Q.

What are chromosomes found in a cell ? State their function.