General Science Class 9 MCQS

Plant cell loses water and cytoplasm shrinks in a process called?

1. Osmosis
2. Deplasmolysis
3. Cytolysis
4. Plasmolysis

Special type of movement of specific substances through carrier protein is :

1. Facilitated diffusion
2. Active transport
3. Passive transport
4. Osmosis

The microtubules arranged in a very particular pattern to form centriole are _____ in number.

1. 26
2. 27
3. 23
4. 25

Chromosomes are thread like structures appear at the time of :

1. Cell growth
2. Cell death
3. Cell division
4. Cell differentiation

The two chromatids are attached to each other at :

1. Telomere
2. Histone
3. Chromonema
4. Centromere

Chromosomes in the cell which are similar to each other in shape and size are called?

1. Homologous pair
2. Heterologous pair
3. Sister chromatids
4. Non-homologous pair

Chromosomes with one arm very small and other very long called :

1. Metacentric
2. Acrocentric
3. Telocentric
4. Submetacentric

Chromosomes consist of two genetically identical copies of thread called?

1. Chromonema
2. Chromosomes
3. Chromatids
4. Chromatin

Period of extensive metabolic activity, in which cell grow, enzymes are synthesizes?

1. S phase
2. M phase
3. G2 phase
4. G1 phase

In animal meiosis produces :

1. Gametes
2. Zygotes
3. Embryos
4. Somatic cells