Tag: multicellular organisms

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Questions Related to multicellular organisms

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Even when glucose is preferred, a basal, low level of lactose permease is constitutively expressed in E. coli, allowing some lactose to enter the cell to induce the lac operon.

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

Name the kinds of cells found in the following places:

  1. Surface of the human skin

  2. Salivery gland

  3. Brain

  4. Inner lining of the wind pipe
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

A. merkel cells, keratinocytes, melanocytes andLangerhans cells.

B.epithelial cells, mucous cells.

C. astrocytes, oligodendrocytes andependymal cells.

D. goblet cells, columnar epithelial cells.

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

Some organs are used in more than one system.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

Which  is the correct order for levels of organization in humans

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Cells are autonomous because

  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.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.