Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany biotechnology and its applications biopiracy biotechnological regulations principles and process of biotechnology

The purpose of biopiracy is

  1. Introduction of new plant varieties

  2. Introduction of new living organisms

  3. Production of pharmaceuticals

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biopiracy is driven by the desire to commercialize biological resources for various purposes, including pharmaceuticals, new crop varieties, and industrial applications.

Multiple choice botany biotechnology and its applications biopiracy biotechnological regulations principles and process of biotechnology

A plant containing variation in the genetic composition is an example of  _________.

  1. Gene pool

  2. Chromosome

  3. Genetic resources

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Genetic resources are the genes found in plants and animals that are actual or potential value to people. Thus a plant containing variation in the genetic composition is an example of genetic resources. Hence option C is the correct answer.

Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals

Which of these is a multicellular organism?

  1. Amoeba

  2. Paramoecium

  3. Human beings

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A. Amoeba is a single-celled eukaryotic organism that moves by the means of pseudopodia.
B. Paramoecium is a unicellular eukaryotic organism. It is a ciliate.
C. Human beings are the multicellular primates, scientifically known as Homo sapiens.
So, the correct answer is 'Human beings'.
Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals

Which one from the following is an example of multicellular organism?

  1. Chlamydomonas

  2. Bacteria

  3. Snake

  4. Amoeba
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The cell is the structural unit of life. Unicellular organisms are made up of one cell that performs all the functions e.g., bacteria, amoeba, Chlamydomonas. Whereas, multicellular organisms are made up of numbers of cells and a differnt group of cells perform a different function to maintain life. Snake is an example of the multicellular eukaryotic organism.
Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals cell parameters

Efficient large-sized cells are

  1. Elongated

  2. Elongated or branched

  3. With large surface area

  4. Having microvilli
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Generally, cells are small so they can have an efficient surface area to volume ratio. Cells are so small so they can diffuse faster and all their processes will be a lot faster because of the smaller size of the cell.
  • For the large sized cells to become Efficient the cells must be elongated in order to have an efficient surface area to volume ratio.
  • Hence efficient large-sized cells are elongated.
  • So, the correct answer is 'Elongated'.

    • Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals the cell structure cytoplasm cell parameters

    Which of following organisms can be seen only under the microscope?

    1. Unicellular

    2. Multicellular

    3. Vertebrates

    4. All of the above
    Reveal answer Fill a bubble to check yourself
    A Correct answer
    Explanation
    • Most unicellular organisms are of microscopic size and are thus classified as microorganisms, for example, Phytoplankton and protozoa range from about 0.001 mm to about 0.25 mm.
    • Most of the multicellular organisms and vertebrates are visible to the naked eye, which means that it is possible to view them without using the microscope.
      So, option A is the correct answer.
    Multiple choice botany cell theory, cell specialization, and cell replacement number and shape of cells unicellular and multicellular organisms diversity and classification in animals

    Which one is enucleated?

    1. Squamous epithelial cells

    2. Mature leucocyte of man

    3. Mature erythrocyte of frog

    4. Mature erythrocyte of man

    5. Osteocyte in man
    Reveal answer Fill a bubble to check yourself
    D Correct answer
    Explanation

    • Enucleation is the phenomenon in which the nucleus is removed. Enucleation occurs roughly when the cell has reached maturity.
    • Red blood cells or Erythrocytes are initially produced in the bone marrow with a nucleus. They then undergo a process known as enucleation.
    • Enucleation allows the red blood cell to contain more hemoglobin and therefore, carry more oxygen molecules. It also allows the cell to have its distinctive bi-concave shape which aids diffusion. This shape would not be possible if the cell had a nucleus in the way. Hence mature erythrocyte of man is enucleated.
    • So, the correct answer is 'Mature erythrocyte of man'.