Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Biradial symmetry and lack of cnidoblasts are the characteristics of-

  1. Starfish and sea anemone

  2. Ctenoplana and Beroe

  3. Aurelia and Paramecium

  4. Hydra and starfish
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ctenoplana and Beroe lack cnidobiasts and have brradial symmetry. These belong to phylum-Ctenophora. Hydra, sea anemone and Aurelia are coelenterates which have cnidoblasts. Although sea anemone has biradial symmetry.

So, the correct answer is 'Ctenoplana and Beroe'.
Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Match list I with list II and select the correct option.

List I List II
a. Protozoa 1. Cleiona
b. Aschelminthes 2. Beroe
c. Porifera 3. Monocystis
d. Ctenophora 4. Wuchereia
e. Cnidaria 5. Pennatula

  1. a- 3, b- 4, c- 1, d- 2, e- 5

  2. a- 4, b- 3, c- 1, d- 2, e- 5

  3. a- 5, b- 4, c- 1, d- 2, e- 3

  4. a- 1, b- 4, c- 3, d- 2, e- 5

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

Beroe (comb jellyfish) belong to the Ctenophora. Monocystis is an endoparasite found in the seminal vesicles and coelom of earthworm (Annelida). Wuchereria is a human parasitic roundworm (Aschelminthes) known to cause lymphatic filariasis. Pennatula is colonial marine cnidarian. Cleiona belongs to Porifera.

Therefore, the correct answer is option A.

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Presence of comb plates is characteristic feature of

  1. Porifera

  2. Cnidaria

  3. Ctenophora

  4. Platyhelminthes

  5. Annelida
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ctenophores are commonly known as sea whales or comb jellies, radially symmetry, diploblastic organisms with tissue level of organization. The body bears eight external rows of ciliated comb plates which help in locomotion, hence the name Ctenophora. Cnidocytes are absent.

So the correct answer is 'Ctenophora'.

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Which of the following is not a characteristic of phylum Ctenophora?

  1. They are exclusively marine, radially symmetrical animals

  2. They move by cilia, which join together to form eight median comb plates

  3. When the tentacles are present they are two in number and contain cnidoblasts

  4. Reproduction takes place only by sexual means
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Select the wrongly paired one from the following.

  1. Flats worms - Tape worm and liver fluke

  2. Sea walnuts - Hydra and Obelia

  3. Homoiothermous - Aves and mammals

  4. Incomplete digestive system - Platyhelminthes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

a) Tape worm and liver fluke belongs to phylum platyhelminthes, having dorsoventrally flattened body hence are flat worms.

b) Hydra and Obelia are cnidarians belongs to phylum coelenterata and exhibit two basic body forms i.e, polyp and medusa. Sea walnuts belongs to phylum ctenophora and bears comb plates.
c) Homiothermous are warm blooded animals which maintains a constant body temperature and includes aves and mammals.
d) Platyhelminthes have incomplete digestive system as they absorb nutrients from the host directly through their body surface.
So, the correct answer is option B.

Multiple choice zoology diseases and immunity active and passive immunity acquired immunity innate and acquired immunity

The transfer of antibodies from a pregnant mother to her fetus is a type of

  1. Naturally acquired passive immunity

  2. Artificially acquired active immunity

  3. Artificially acquired passive immunity

  4. Naturally acquired active immunity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Naturally acquired passive immunity is a type of antibody-mediated immunity conveyed to a fetus or infant by its mother. In humans, maternal antibodies are passed through the placenta to the fetus by an FcRn receptor on placental cells.

So, the correct option is 'naturally acquired passive immunity'.

Multiple choice zoology mutation genome projects human genome project human genome project and dna fingerprinting

Human genome project was discovered by

  1. Francis Collins and Roderick

  2. Watson and Crick

  3. Beadle and Tatum

  4. Paul Berg and Wollman
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Human Genome Project was a massive international research effort, and Francis Collins served as the director of the NIH's National Human Genome Research Institute during the project.

Multiple choice zoology the paths traversed by life mutational theory of evolution theories of evolution other theories of evolution

Hugo de Vries' contribution is :

  1. Theory of Natural selection

  2. Theory of Mutations

  3. Law of Dominance

  4. Law of segregation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hugo de Vries gave a theory of evolution, called 'Mutation theory' which states that evolution is a jerky process where new varieties and species are formed by mutation.

So. the correct answer is 'Theory of Mutation'