Tag: caskets of life

Questions Related to caskets of life

Which of the following statements concludes that ruminants are multicellular animals?

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

  1. They have specialized organs for digestion.

  2. They can reproduce.

  3. They have lungs for breathing.

  4. Both A and C.

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Correct Option: D
Explanation:

Reproduction is the characteristic for living organisms i.e., both unicellular and multi cellular organisms can reproduce irrespective of their cellular level. But, only multi cellular organisms have specialized organs for digestion and respiration/breathing that is GIT (Gastro Intestinal Tract) and Respiratory tract respectively, unlike unicellular organisms who respire and engulf food by general body surface. Thus, digestive tract and respiratory tract are defining feature of multicellular organism (ruminant). 
So, the correct answer is 'Both A and C'.

Fishes are multicellular animal because

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

  1. It has organs and organ system.

  2. It has streamlined body

  3. It has scales

  4. None of the above

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Correct Option: A

Identify the unicellular organism.

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

  1. Algae

  2. Amoeba

  3. Snail

  4. Ant

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Correct Option: B
Explanation:

Some living organisms are made up of once cell only, these are called unicellular. These organisms have a large surface area to volume ratio and rely on simple diffusion to meet their needs. An example of a unicellular animal is Amoeba. Amoeba feed on smaller organisms such as bacteria.

Which of the following characteristics concludes that Amoeba is a unicellular animal?

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

  1. It is able to move.

  2. It has a single cell.

  3. It lacks specialized organs for various function.

  4. Both B and C

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Correct Option: D

Paramoecium is a multicellular animal.

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

  1. True

  2. False

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Correct Option: B
Explanation:

The organisms can be broadly classified into two groups, namely unicellular organisms and multicellular organisms depending upon the number of cells. Unicellular organisms are made up of only one single cell. Examples include Amoeba, Paramecium, yeast, bacteria. Multicellular organisms are those organisms that are made up of more than one cell. Examples include human beings, animals.

Hence the statement paramoecium is a multicellular animal is false. 

Cells are composed of highly independent and randomly interacting components.

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

  1. True

  2. False

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Correct Option: B
Explanation:

The cell is a basic biological unit of living organisms.

A cell contains different membrane-bound organelles which are structural and functional units constructed from several macromolecules bonded together.A typical animal cell contains, the nucleus which possesses genetic material DNA, mitochondria to generate energy, nucleolus in the nucleus to produce ribosomes, ribosomes to produce proteins and endoplasmic reticulum which packages and transports proteins, sugars and lipids to Golgi bodies to distribute them through lysosomes to different parts of the cell. All organelles are anchored in cytoplasm of the cell and work in harmony with each other.
Therefore the option B is correct.

Which one of the following pairs of selectable marker genes and substrates used to select transformed cells is not correctly matched?

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

  1. Npt II-Kanamycin

  2. Hpt- Hygromycin

  3. Dhfr- Gentamycin

  4. Bar- Bialaphos

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Correct Option: A

In the presence of glucose and lactose. Escherichia coli utilizes glucose. However, lactose also enters the cells because.

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

  1. low level of permease is always present in the cell

  2. it uses the same transporter as glucose

  3. it diffuses through the bacterial cell membrane

  4. it is transported through porins

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Correct Option: A

Name the kinds of cells found in the following places:

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

  1. Surface of the human skin

  2. Salivery gland

  3. Brain

  4. Inner lining of the wind pipe

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Correct Option: A,B,C,D
Explanation:

A. merkel cells, keratinocytes, melanocytes andLangerhans cells.

B.epithelial cells, mucous cells.

C. astrocytes, oligodendrocytes andependymal cells.

D. goblet cells, columnar epithelial cells.

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'.