Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Initial causes of ecological succession includes:

  1. Climatic and Biotic factors

  2. Abiotic Factors

  3. Water Vapours

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

Ecological succession is the process of change in the species structure of an ecological community over time. It is primarily initiated by climatic factors (like temperature and rainfall) and biotic factors (like the introduction of pioneer species or human activity).

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Ecotype is a type of species in which environmentally induced variations are

  1. Temporary

  2. Genetically fixed

  3. Genetically not related

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

An ecotype is a distinct population within a species that has adapted to specific local environmental conditions. These adaptations are genetically fixed, meaning they are inherited and persist even if the organism is moved to a different environment.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Non living things in an environment is known as

  1. Biotic Factors

  2. Abiotic Factors

  3. Biotic and abiotic factors

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

In ecology, the environment is divided into biotic factors (living components) and abiotic factors (non-living components). Abiotic factors include things like sunlight, temperature, water, and soil.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Which of the following is not properly matched?

  1. Formaldehyde- Carcinogenic

  2. Sulphur dioxide - Respiratory problems

  3. Nitrogen oxide - Brown air
  4. Mean annual temperature - $25^o$C

  5. Photochemical smog - Grey air
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mean annual temperature is calculated by subtracting the lowest recorded temperature from the highest recorded temperature of the of the day. It can vary depending on the weather and climate of an area.

A. Formaldehyde has been classified as cancer causing agent by the EPA. It has shown leukaemia incidences.
B. Sulphur dioxide is responsible for the respiratory tract diseases like asthma, bronchitis etc.
C. Nitrogen oxide is called the brown air because of the change in frequencies of absorption of light when nitrogen combines with the oxygen.
D. Mean annual temperature can vary depending on the weather and climatic conditions.
E. Photochemical smog forms grey air due to the formation of ozone and PAN that decreases the visibility.
Hence, the correct answer is 'Mean annual temperature - 25$^{o}$C'

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

In what way a plant growing on a forest floor is adapted for its survival?

  1. Has shallow roots

  2. Requires low light

  3. Has a deep ta root

  4. Requires strong light

  5. Requires moist soil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants growing on the forest floor (understorey) are adapted to lower Sunlight intensity or are shade loving. This is because, the dense canopy does not allow enough light to penetrate through and reach the forest floor. Light is the limiting factor for these plants and therefore, they are adapted to survive under low light conditions. Moisture availability and related adaptations are not of consideration. Thus, the correct answer is option B.

Multiple choice zoology movement and locomotion in man bones and movements our skeletal system and the skin human skeleton system

Which joint is more flexible in males than females?

  1. Public symphysis

  2. Deltoid ridge

  3. Deltoid tuberosity

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

The hip girdle is located in the lower part of the trunk. 

It is made up of three bones that are upper ileum, lower ischium and the pubis.
The acetabulum is formed by ileum, ischium and pubis but in mammals, the pubis is replaced by the cotyloid bone.

The pubic symphysis is present in mammals. The two innominate bones and sacrum together form a sort of bowel.
This is also an adaptation for the upright posture of the human body. The female pelvis is larger and has a broader front and larger bottom opening than the male pelvis. This is an adaptation for childbirth.

So, the correct option is 'Public symphysis'

Multiple choice zoology movement and locomotion in man bones and movements our skeletal system and the skin human skeleton system

Supination means turning plan

  1. Upward

  2. Forward

  3. Downward backward

  4. Bending

  5. Straightening
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pronation and supination are a pair of unique movements possible only in the forearms and hands, allowing the human body to flip the palm either face up or face down. The muscles, bones, and joints of the human forearm are specifically arranged to permit these unique and important rotations of the hands. So, the correct option is "A" (Upward).