Tag: the living world: adaptations and classification

Quizzes (19) Questions (18)

Questions Related to the living world: adaptations and classification

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

An animals phylum is defined on the basis of 

  1. Number of germ layers

  2. the uniqueness of its body plan

  3. type of body symmetry

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
An animal phylum is defined on the basis of 6 parameters of which three are - number of germ layers - diploblastic or triploblastic. Type of body plan i.e blind sac pattern, tube within tube pattern and body symmetry - asymmetry, radial symmetry and bilateral symmetry
So, the correct answer is 'All the above'
Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Animals of class ciliata

  1. Have two nuclei

  2. Are autotrophs

  3. Reproduce sexually

  4. Possess cilia
Reveal answer Fill a bubble to check yourself
A,D Correct answer
Explanation
Animals of class ciliata are characterised by the presence of hair-like organelles called cilia. They have two types of nuclei: a tiny, diploid micronucleus (generative nucleus) which carries the germline of the cell, and a large, polyploid macronucleus (vegetative nucleus) which takes care of general cell regulation, expressing the phenotype of the organism. Most ciliates are heterotrophs. Ciliates reproduce asexually, by various kinds of fission.
So, the correct options are 'Have two nuclei and possess cilia'.
Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

A cell placed in hypotonic solution will 

  1. Shrink

  2. Swell up

  3. Retain its size

  4. Be plasmolysed
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the medium surrounding the cell has a higher water concentration than the cell,i.e., it is very dilute (hypotonic solution), then the cell will gain water by osmosis and will swell up.

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Which of the following worms are categorized as thread worms?

  1. Tapeworm

  2. Earthworm

  3. Roundworm

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

Threadworms are a type of roundworms.

Common characteristics of roundworms that confirm this are:
1. First organisms with organ level classification
2. They are often parasitic
3. Triploblastic
4. Bilaterally symmetrical
So the correct answer is 'Roundworms'.

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Which of the following animal phylum includes segmented worms?

  1. Annelida

  2. Arthropoda

  3. Mollusca

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

Molluscs do not have segmentation in their bodies.

Arthropoda has segmentation as a character but it does not include worms.
Annelids is the phylum of the segmented worms.
Some characteristics of Annelids are:
1. Segmented bodies.
2. Bilaterally symmetrical.
3. First organisms with organ level classification.
So the correct answer is 'Annelida'.

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Sea cucumber belongs to phylum 

  1. Porifera

  2. Mollusca

  3. Echinodermata

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

Sea cucumber belongs to Echinodermata.

Some characteristics of Echinodermata are:
1. Radial symmetry
2. Triploblastic
3. Exclusively marine
4. Presence of Exoskeleton
So the correct answer is 'Echinodermata'.