Tag: ethology

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Questions Related to ethology

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

A frog has its brain crushed, but when pinched on the leg, the leg draws away. It is an example  of 

  1. neurotransmitter induced response

  2. simple reflex

  3. condition reflex

  4. automated motor response.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The action does not involve the brain and is an example of a simple reflex. When the leg of the frog is pinched, the stimulus is received by receptors on the skin that set up a sensory impulse. This impulse is carried to the spinal cord through the dorsal sensory root of a spinal nerve. The spinal cord then transforms the sensory impulse into a motor impulse. This impulse is then transmitted to the leg muscles. The muscles on receiving the impulse contract and the leg is withdrawn to avoid the stimulus. So, the correct option is 'simple reflex'.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Which of the following is incorrect w.r.t scientific names of the given animal?

  1. Brain coral - meandrine

  2. portuguese man of war - physalia

  3. Venus flower basket - Euplectella

  4. bath sponge - spongilla
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Brain coral is typically of the genus Diploria or similar; 'meandrine' is a descriptive term for its shape, not a scientific genus name. The other options correctly match the common names to their respective genera.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Which of the following survives a temperature of $104^o$C to $106^o$C?

  1. Marine Archaebacteria

  2. Hot water spring thermophiles

  3. Seeds of angiosperms

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

Marine Archaebacteria, specifically hyperthermophiles found in hydrothermal vents, are known to survive and thrive at temperatures exceeding 100 degrees Celsius.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Match the animals given in column A with their location in column B.

Column A Column B
I. Dodo (i) Africa
II. Quagga (ii) Russia
III. Thylacine (iii) Mauritius
IV. Stellar's sea cow (iv) Australia

Choose the correct match from the following.

  1. I(i), II(iii), III(ii), IV(iv)

  2. I(iv), II(iii), III(i), IV(ii)

  3. I(iii), II(i), III(ii), IV(iv)

  4. I(iii), II(i), III(iv), IV(ii)
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Which of the following dinosaurs had huge fearsome dagger like teeth and was about $20$ feet in height? 

  1. Ichthyosaurs

  2. Tyrannosaurus

  3. Pelycosaurs

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

Tyrannosaurus rex was a massive carnivorous dinosaur known for its huge, dagger-like teeth and towering height of about 20 feet, fitting the exact description provided.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Find the mismatch 

  1. Ephyra - larva of Aurelia

  2. planula - Larve of obelia

  3. Gorgonia - sea fan

  4. sycon - Direct development
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sycon is a marine sponge belonging to the phylum Porifera, and it exhibits indirect development via a larval stage, not direct development. Therefore, the pairing of sycon with direct development is the mismatch.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Which of the following are the most distantly related to one another?

  1. Sunfish and dolphins.

  2. Tree frogs and snakes.

  3. Vampire bats and birds.

  4. Bears and whales.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sunfish are bony fish, while dolphins are mammals. This represents a massive evolutionary gap compared to the other pairs, which are all tetrapods (amphibians, reptiles, birds, or mammals).