Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology economic importance of plants and animals animal breeding animal husbandry and its importance introduction to animal husbandry

Management and care of farm animals is known as________________

  1. Dairy technology

  2. Caring

  3. Animal husbandry

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

  • Animal husbandry can be defined as the management and care of farm animals by humans for profit, in which genetic qualities and behavior, considered to be advantageous to humans, are further developed. It can also be considered as the practice of selectively breeding and raising livestock to promote desirable traits in animals for utility, sport, pleasure, or research. 

Therefore, the correct answer is option C.

Multiple choice zoology economic importance of plants and animals animal breeding animal husbandry and its importance introduction to animal husbandry

During egg laying period, they need enough ______ which increases the fertility.

  1. Space and light

  2. Dark and space

  3. Space and temperature

  4. Temperature and pressure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct answer is 'space and light'

Egg laying like any other process is dependent on environmental cues to progress like sunlight which needs to be adequate during this period. Also to be able to lay healthy eggs that dont get infected with microbes or break there needs to be enough space for laying them.

Multiple choice zoology tissue level of organisation muscle tissue structure of protein muscle tissues

Which of the following is an incorrect match of cell junction along with its structure and function?

  1. Cell junction - Tight junctions,
    Structure - Tightly bound, leak proof, fibrous protein 'belt' that surrounds cells ,
    Functions - Organizing junction : hold cells together such that material passes through but not between the cells.

  2. Cell junction - Desmosomes
    Structure - Intermediate filaments linked to adjoining cells through cadherins cytoskeleton.
    Functions - Anchoring junction : "buttons" cells together.

  3. Cell junction - Plasmodesmata
    Structure - Six transmembrane connexon proteins creating a "pipe" that connects cells
    Function - Communicating junctions : allow passage of small molecules from cell to cell in a tissue.

  4. Cell junction - Adherens junctions
    Structure - Transmembrane fibrous proteins.
    Functions - Anchoring junction : "roots" extra-cellular matrix to cytoskeleton.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plasmodesmata are channels that traverse the cell walls of plant cells and some algal cells, allowing transport and communication between them. They are not made of connexon proteins; connexons are found in gap junctions in animal cells.

Multiple choice zoology tissue level of organisation muscle tissue structure of protein muscle tissues

Which is true of contractile tissue of sphincter?
$1.$ Mesodermal
$2$. Contain stretch receptors
$3$. Rhythmicity
$4$. Indefatigible.

  1. All the four
  2. Only $1, 2$ and $3$
  3. Only $1, 2$ and $4$
  4. Only $1, 3$ and $4$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sphincter muscles are typically smooth muscles (mesodermal), contain stretch receptors to regulate tone, and exhibit rhythmicity in some cases (like the pyloric sphincter). They are generally not indefatigable; like other muscles, they can fatigue.

Multiple choice zoology embryonic development in human muscle tissue structure of protein muscle tissues

Muscles of iris and ciliary body originate from

  1. Ectodoerm

  2. Mesoderm

  3. Endoderm

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

Muscles of iris and ciliary body are "smooth muscles". Smooth muscle cells arise from undifferentiated mesenchymal cells (embryonic mesoderm). These cells differentiate first into mitotically active cells, myoblasts, which contain a few myofilaments. Myoblasts give rise to the cells which will differentiate into mature smooth muscle cells. Iris is derived from neuroectoderm but the muscles of iris is derived from mesoderm. Thus, the correct option is B.

Multiple choice zoology tissue level of organisation muscle tissue structure of protein muscle tissues

What is sarcomere ?

  1. Part between two H-lines

  2. Part between two A-lines

  3. Part between two I-bands

  4. Part between two Z-lines
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The sarcomeres are fibrous protein filaments that slide past one another when the muscle contracts or relaxes. It is basically the region between two Z-bands.
So, the correct answer is 'Part between two Z-lines'.
.