Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology earthworm earthworm - reproductive system reproduction in earthworm introduction to reproduction

Part of peritoneum that suspends testes is called

  1. Mesentery

  2. Mesorchium

  3. Mesovarium

  4. Renal peritoneum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A mesentery is a double layer of visceral peritoneum. It connects an intraperitoneal organ to (usually) the posterior abdominal wall. It provides a pathway for nerves, blood vessels and lymphatics to travel from the body wall to the viscera.
The mesentery of the small intestine is simply called ‘the mesentery’. Mesentery related to other parts of the gastrointestinal system is named according to the viscera it connects to the mesoappendix.
So the correct answer is 'Mesentery'.
Multiple choice zoology selection and evolution extinction extinctions environmental science

Which of the following is correct?

  1. 99% of existed species are extinct.

  2. 25% of existed species are extinct.

  3. 40% of existed species are extinct.

  4. 30% of existed species are extinct.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Around 99% of all species which amounts to over 5 billion species which ever lived on Earth are said to be extinct. The current number of species present on Earth is estimated to be 10-14 million. Hence option A is correct.

Multiple choice zoology selection and evolution extinction extinctions environmental science

Which of the following is included in those species which are likely to become extinct?

  1. Endangered species

  2. Critically endangered species

  3. Vulnerable species

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

The species (including animals, plants, fungi, etc.) which are vulnerable to endangerment in the near future are known as threatened species. The International Union for Conservation of Nature (IUCN) is the authority on threatened species, and it treats threatened species as a group of three categories, depending on the degree relative to which they are threatened. Those categories are Vulnerable species; Endangered species and Critically endangered species. 

So, the correct answer is 'All of the above'.

Multiple choice zoology selection and evolution extinction extinctions environmental science

Carbon dating is useful for measuring age of a fosil/skeleton/article between

  1. 500,000 - 50,000,000 years

  2. 50,000 - 500,000 years

  3. 1000 - 50,000 years

  4. 1 - 1000,000 years.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Radiocarbon dating (C-14) is effective for organic materials up to approximately 50,000 years old due to the half-life of Carbon-14.

Multiple choice zoology selection and evolution extinction extinctions environmental science

An instrument which measures concentration of C-14 directly is

  1. Accelerator mass spectrometer

  2. Spectroscope

  3. Geiger counter

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

Accelerator Mass Spectrometry (AMS) is the most precise method for directly measuring the concentration of C-14 isotopes in a sample.

Multiple choice zoology selection and evolution extinction extinctions environmental science

Which of the following is the tallest tree of the world?

  1. Eucalyptus regnans

  2. Sequoia sempervirens

  3. Pinus longifolia

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

The tallest trees in the world are redwoods (Sequoia sempervirens), which tower above the ground in California. These trees can easily reach heights of 300 feet (91 meters).


So, the correct option is 'Option A, Eucalyptus regnans'.

Multiple choice zoology selection and evolution extinction extinctions environmental science

Which one has undergone anthropogenic extinction?

  1. Mastadon

  2. Caspian tiger

  3. Wooly mammoth

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

Caspian tiger has undergone anthropogenic extinction. The anthropocene extinction, is the ongoing extinction event of species during the present holocene epoch, mainly as a result of human activity. It is also called as the holocene extinction or as the Sixth Extinction. Reasons for such extinction include land development, overexploitation, species translocations and introductions, and pollution.
So, the correct answer is 'Caspian tiger'.