Tag: the cell structure

Questions Related to the cell structure

Most of our cells are surrounded by:

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. blood

  2. interstitial fluid

  3. pure water

  4. air

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Correct Option: D
Explanation:

Most of our cells are surrounded by air.

So, the correct option is 'air'.

Some organs are used in more than one system.

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. True

  2. False

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Correct Option: A
Explanation:

There are certain organs which are parts of more than one system and perform functions for both of them. For example, the pancreas produces hormones where they have an endocrine role ad also secrete digestive juices being a part of digestive system. Similarly, male urethra acts as a duct for both male sperms as well as urine, thereby acting as a part of both reproductive system and excretory system. Bone marrow is a part of skeletal; as well as the circulatory system as it also produces RBC's and WBC'S. 

Thus, the correct answer is option A. 

Which of the following cells can be seen with a naked eye?

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. Egg cell of a hen

  2. Neurons of a giant squid

  3. Cells of the elephant's brain

  4. No single can be seen with a naked eye

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Correct Option: A
Explanation:

In all mammals, the ovum is fertilized inside the female body. typically visible to the naked eye without the aid of a microscope.

So, the correct option is 'Egg cell of a hen'.

Which  is the correct order for levels of organization in humans

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. Cell $\rightarrow$ Tissue$\rightarrow$Organ$\rightarrow$Organ system$\rightarrow$Organism

  2. Cell$\rightarrow$Organ$\rightarrow$Organ system$\rightarrow$Organism

  3. Cell$\rightarrow$Tissue$\rightarrow$Organ$\rightarrow$Organism

  4. Cell$\rightarrow$Tissue$\rightarrow$Organism

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Correct Option: A
Explanation:

Cells are grouped into tissues, tissues are grouped into organs, different organs are grouped into organ systems and many organ systems come together to form complex organisms like human beings.

First major 'multicellular' life is called:

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. Cambrian Period

  2. Achaea

  3. Silurian

  4. Achaia

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Correct Option: A

Cells are autonomous because

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. They synthesise components of living protoplasm from non living materials.

  2. They are able to grow and divided.

  3. Each cell has its own life span.

  4. All of the above.

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Correct Option: D
Explanation:

Cells are autonomous which means they are self contained. They are able to carry out their own activities independently for their survival. They are able to synthesis protoplasmic components of a cell from non living matter such as simple organic compounds. They are able to divide into daughter cells as they are capable of producing energy, exchange of gases and replication of genetic material required for division. Every such cell has a limited life span as it grows, divide and then later die but the other cells surrounding that cell may be in a different state of growth. Hence, option D is correct. 

What happens during growth of a cell?

botany caskets of life the cell structure multicellular organisms number and shape of cells

  1. K. I decreases

  2. K. l. increases

  3. K. I. fluctuates

  4. K. I. remains constant

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Correct Option: A