Tag: environmental science

Questions Related to environmental science

.......... is used in seeding clouds.

basics of management of water environmental science conservation of resources food production: soil and water management biology

  1. Potassium iodide

  2. Calcium carbonate

  3. Sulphur dioxide

  4. Ammonium phosphate

Show answer
Correct Option: A
Explanation:
  • An artificial method of rain is called seeding cloud. It is a type of weather modification. 
  • This method aims at to change the amount of precipitation which falls from clouds. The method uses seeding of certain substances into the air that will serve as cloud condensation. 
  • In this, tiny particles like potassium iodide or dry ice are seeded (sprayed) in the atmosphere. 
  • The water present in the air is attracted and condenses near the sprayed particles. 
  • It further crystallises to form ice. Finally, it causes the rainfall. 
  • Thus, the correct answer is option A.

Find out the wrongly matched pair.

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Nephridia - Earthworms - help to remove nitrogenous wastes and maintain ionic balance

  2. Malpighian tubules - insects including cockroaches - help in the removal of nitrogenous wastes and osmoregulation

  3. Antennal glands or green glands - excretory organ in the abdominal part of crustaceans like prawns - perform the excretory function

  4. Protonephridia - Rotifers - primarily concerned with ionic and fluid volume regulation

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Correct Option: A

Earthworm is:

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Hermaphrodite

  2. Monoecious

  3. Dioecious

  4. Both (a) and (b)

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Correct Option: A

In earthworm, pharyngeal, nephridia are present as three paired tuffs in the segments.

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. $3$rd, $4$th and $5$th

  2. $4$th, $5$th and $6$th

  3. $5$th, $6$th and $7$th

  4. $6$th, $7$th and $8$th

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Correct Option: A

In earthworm skeleton like function is performed by _______________.

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Coelomic fluid

  2. Alimentary canal filled with food

  3. Typhlosole

  4. Clitellum

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Correct Option: A

What is common between earthworm and Periplaneta?

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Both have red coloured blood.

  2. Both possess anal styles.

  3. Both have Malpighian tubules.

  4. Both have segmented body.

Show answer
Correct Option: D
Explanation:

Both earthworm (annelid) and Periplaneta (arthropod) have segmented bodies. In earthworm, the body is metamerically segmented while in Periplaneta, it is externally segmented.

Which one of the following correctly described the location of some body parts in the earthworm Pheretima ?

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Two pairs of accessory glands in 1618 segments

  2. Two pairs of testes in $10^{th} and 11^{th}$ segments.

  3. Four pairs of spermathecae in 47 segments

  4. One pair of ovaries attached at inter segmental septum of $14^{th} and 15^{th}$ segments.

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Correct Option: B

Choose the correct answer from the alternatives given.
The yellowing of leaves, called chlorosis, is usually caused by the deficiency of:

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. sodium

  2. phosphorus

  3. magnesium

  4. calcium

Show answer
Correct Option: C
Explanation:

A magnesium-deficient crop will tend to have a pale overall colour. The earliest specific symptom of magnesium deficiency is interveinal chlorosis of older leaves. Chlorosis generally progresses to yellowing and necrosis of the oldest leaves. Therefore, without sufficient amounts of magnesium, plants begin to degrade the chlorophyll in the old leaves. This causes the main symptom of magnesium deficiency, interveinal chlorosis, or yellowing between leaf veins, which stay green, giving the leaves a marbled appearance.

So, the correct option is, 'Magnesium'.

Earthworm has no special sense organs, still they are sensitive to

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Light and sound

  2. touch and sound

  3. Touch, taste and light

  4. Touch, taste, light and vibrating

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Correct Option: A
Explanation:

In earthworms there are specialised nerves with photoreceptors in the nerve endings present in the skin and the impulses from these nerves are carried rapidly to the muscles of the earthworm. This makes them sensitive to stimuli such as light and sound. 

So, the correct option is 'Light and sound'.

The common Indian earthworms are:

zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

  1. Pheretima and Tigrina

  2. Pheretima and Hirudo

  3. Pheretima and Terrestris

  4. Pheretima and Lumbricus

Show answer
Correct Option: A