Tag: biology

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Questions Related to biology

Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Head of housefly bears .......... compound eyes.

  1. One

  2. Two

  3. Three

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

Compound eyes mainly provide the mosaic pattern of vision as they don't have the well-developed brain to analyze the formed image. The image is formed as repeating units known as ommatidia. The head of the housefly bears two compound eyes.

So, the correct answer is option B.

Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Why are houseflies not considered as biological vectors?

  1. They do not spread diseases

  2. They do not transmit disease directly

  3. They are parasites and not vectors

  4. They transmit the diseases directly
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Houseflies are considered mechanical vectors because they carry pathogens on their bodies and legs, transferring them directly to food or surfaces, rather than the pathogen undergoing a developmental cycle within the fly.

Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Housefly cannot take food unless it is in

  1. Digested state

  2. Liquid state

  3. Semisolid state

  4. Solid state
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Once a housefly sniffs something interesting and tastes it with its feet and palps, the time has come to gobble up the delicious morsel. If the meal in question happens to be liquid already, then the task is easy. Since the housefly's mouth parts are designed to sponge and ingest liquefied food, it's just a matter of turning on the suction. The food goes straight into the fly's stomach. Solid food is slightly more difficult. Houseflies can't bite or chew -- they simply don't have the proper equipment.

So, the correct answer is 'Liquid state'.
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Housefly feeds on sugar by

  1. Crushing its crystals and then sucking the powder

  2. Crushing and eating

  3. Sucking

  4. Dissolving in saliva and sucking.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Adult houseflies never have chewing mouthparts. They use saliva to change solids to liquids. Sponge-like mouthparts pick up semi-liquid foods, such as feces and decaying matter.
  • Hence Housefly feeds on sugar by Dissolving in saliva and sucking because they do not have chewing mouthparts.
  • So, the correct answer is '.Dissolving in saliva and sucking'.
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Mature larva of Housefly is

  1. Caterpillar

  2. Wriggler

  3. Grub

  4. Maggot.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The female housefly usually mates only once and stores the sperm for later use. She lays batches of about 100 eggs on decaying organic matter such as food waste, carrion, or faeces. These soon hatch into legless white mature larvae, known as maggots.
  • This larval stage is further followed by pupa and adult stages.
  • Hence Mature larva of Housefly is Maggot.
  • So, the correct answer is 'Maggot'.
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Pupa occurs in the life cycle of

  1. Cockroach

  2. Housefly

  3. Honey Bee

  4. Earthworm.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The pupal stage occurs only in holometabolic insects i.e those that undergo a complete metamorphosis, going through four life stages; egg, larva, pupa, and imago(adult). For example, Housefly, Beetle, Butterfly, moths, wasps, etc.
  • During the time of pupation, that the adult structures of the insect are formed whilst the larval structures are broken down.
  • Hence Pupa occurs in the life cycle of Housefly.
  • So, the correct answer is 'Housefly',
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Common House Fly (Musca nebulo) lays eggs on

  1. Cow/Horse dung

  2. Stagnant water

  3. Hanging ropes

  4. Open meats and sweets.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The female housefly usually mates only once and stores the sperm for later use. She lays batches of about 100 eggs on decaying organic matter such as food waste, carrion, or feces.
  • House fly eggs are laid in almost any warm, moist material that will supply suitable food for the larvae. For example, Cow/Horse dung.
  • Hence Common House Fly (Musca nebulo) lays eggs on Cow/Horse dung.
  • So, the correct answer is 'Cow/Horse dung.
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Immature stage of housefly is

  1. Caterpillar

  2. Nymph

  3. Grub

  4. Maggot.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Metamorphosis is defined as the series of changes that occur during the development of adult(mature stage) from the larva(immature stage). The order of metamorphosis in Housefly is Egg, larva or maggot, pupa, and adult.
  • The female housefly usually mates only once and stores the sperm for later use. She lays batches of about 100 eggs on decaying organic matter such as food waste, carrion, or faeces. They hatch after about 12 hours and the larvae, or maggots(immature stage), feed on the rotting organic material. A maggot passes through three larval stages and then forms a pupa or cocoon. The adult fly emerges from the cocoon. Houseflies typically develop from egg to adult(mature stage) within 10 days.
  • Hence Immature stage of a housefly is Maggot(larva).
  • So, the correct answer is 'Maggot'.
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Maggot of Housefly is

  1. Pupa

  2. Larva

  3. Chrysalis

  4. Imago.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Metamorphosis is defined as the series of changes that occur during the development of adult from the larva. The order of metamorphosis in Housefly is Egg, larva or maggot, pupa, and adult.
  • The female housefly usually mates only once and stores the sperm for later use. She lays batches of about 100 eggs on decaying organic matter such as food waste, carrion, or faeces. These soon hatch into legless white mature larvae, known as maggots.
  • Hence Maggot of Housefly is larva.
  • So, the correct answer is 'Larva'.
Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

The order of metamorphosis in Housefly is

  1. Egg, nymph, pupa and adult

  2. Egg, larva, nymph and adult

  3. Egg, larva, pupa and adult

  4. Egg, pupa, larva and adult.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Metamorphosis is defined as the series of changes that occur during the development of adult from the larva.
  • The order of metamorphosis in Housefly is Egg, larva, pupa, and adult.
  • So, the correct answer is 'Egg, larva, pupa, and adult'.