Biology · Environmental Studies

Biology of Insects and Pollination

830 Questions

Insect biology and pollination focus on ecological relationships, crop science, and practical applications like apiculture. These topics regularly appear in general science sections of competitive exams. Review core concepts to build accuracy for test day.

Apiculture and honeyTypes of pollinationInsect binomial nomenclatureCrop damaging pestsFriend of farmers organism

Biology of Insects and Pollination Questions

Multiple choice botany flower to flower importance of pollination flower: parts of a flower flower and pollination

In oak, pollination is facilitated mainly by ___________.

  1. Birds

  2. Droplets of rain

  3. Insects

  4. Wind
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oaks are deciduous trees belonging to the genus Quercus that produce inconspicuous flowers lacking petals. They rely on the wind to carry vast amounts of lightweight pollen from male to female catkins, making wind pollination (anemophily) their primary mechanism.

Multiple choice botany the flower importance of pollination flower: parts of a flower flower and pollination

_______ flowers have very light weighted pollen grains.

  1. Insect pollinates

  2. Wind pollinated

  3. Water pollinated

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

The pollen grains which are very light in weight can be passed on by wind from one flower to another or to the stigma of the same flower. This is known as wind pollination. They produce light weight pollens in large number and do not produce vector. The stigma is sticky.

Multiple choice botany the flower importance of pollination flower: parts of a flower flower and pollination

Yucca is pollinated by.

  1. Pronuba Moth

  2. Bumble Bee

  3. Honey Bee

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

Yucca is the pollinated by a moth known as the Tegeticulla yuccasella.  Each spring, adult moths emerge from the underground cocoons. And the males and females meet up with each other on Yucca plants for mating.

The Yucca moth is also termed as the pronuba moth. It is a small white moth that lives in the semi-arid habitats where Yucca plants grow.

Thus the correct answer is A.

Multiple choice botany the flower importance of pollination flower: parts of a flower flower and pollination

Choose the correct answers from the alternatives given.
Cheiropteriphily is the name given to pollination by

  1. birds

  2. bats

  3. insects

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

Bat-pollinated flowers tend to be large and showy, white or light coloured, open at night and have strong musty odours. They are often large and bell-shaped or a ball of stamens. Flowers are typically borne away from the trunk or other obstructions. More than 500 species of plants, spanning 67 plant families, are pollinated by bats. This pollination syndrome is known as chiropterophily. In general, flowers that use this approach tend to be white or dull in colour, open at night, rich with nectar, and musty or rotten smell. 

So, the correct option is, 'bats'.

Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

The ability of the Venus Flytrap to capture insects is due to

  1. Specialized "muscle-like" cells

  2. Chemical stimulation by the prey

  3. A passive process requiring no special ability on the part of the plant

  4. Rapid turgor pressure changes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Venus Flytrap is an insectivorous plant. It grows in waterlogged soils. Due to waterlogging, the amount of available nitrogen is very less. Hence, it obtains its nitrogen from the insects. Due to this reason, it is also called as the semi-autotrophic or semi-heterotrophic plant. It has leaves with winged petiole attached to it and lamina is modified into two toothed jaws. Each jaw has numerous teeth. Also, the upper surface of each jaw has long sensitive bristles. The upper surface also contains irregularly scattered glands. These bristles are very sensitive to touch stimulus. When an insect comes in contact with these bristles, there is a rapid change in the turgor pressure. This results in the closing of leaf and the insect are captured. 

Thus, the correct answer is 'Rapid turgor pressure changes.'

Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

Which of the following plant traps insect for nutrients?

  1. Lotus

  2. Pitcher

  3. Rose

  4. Tulip
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Plants that eat insects are called insectivorous plants. They have adapted to grow in places where the soil is thin or poor in nutrients, especially nitrogen. Pitcher plant is the example of an insectivorous plant. In pitcher plant, the leaf is modified to form a pitcher-like structure with several hair-like structures inside it. When an insect sits on the pitcher of the plant, the lid closes and the insect gets trapped inside the pitcher.
So, the answer is B.
Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

Insectivorous plants trap insects to 

  1. Meet their potassium requirements

  2. Meet their nitrogen requirements

  3. Meet their phosphorous requirements

  4. Meet their oxygen requirements
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Insectivorous plants trap and digest insects and other small animals to obtain the nitrogen that is required for their growth. Most plants absorb enough nitrogen from nitrates in the soil but as the insectivorous plants live in nitrate-deficient bogs, they need to fulfill their nitrogen demand by digesting the prey instead. 

So the correct option is 'Meet their Nitrogen requirements'

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

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

Houseflies act as a ___________ source for birds.

  1. Protein

  2. Carbon

  3. Mineral

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

Houseflies are generally found feeding and breeding on trash and rotten food where they get attached to several pathogens which are further transmitted by these flies to a healthy host. Housefly pupae contain large amounts of protein and are thus especially beneficial to the various birds, reptiles, and insects that prey on them. 

So, the correct answer is option A.

Multiple choice botany modes of reproduction why do plants reproduce? reproduction and variation the life cycle of plants

Insect's eggs are

  1. Microlecithal and centrolecithal

  2. Megalecithal and isolecithal

  3. Megalecithal and centrolecithal

  4. Megalecithal and telolecithal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Enormous amount of yolk is present in megalecithal eggs and here yolk is several times greater than cytoplasm and yolk is concentrated in the interior of the egg and the cytoplasm is distributed as a thin layer on the outside of the yolk in centrolecithal eggs. These type of eggs is a characteristic of insects. Hence, option C is correct.

Multiple choice biology butterfly and honey bee life cycle of a butterfly metamorphosis in frogs the life of a butterfly types of reproduction in animals oviparous and viviparous

Natural parthenogenesis is found in.

  1. Housefly

  2. Honeybee

  3. Drosophila

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Parthenogenesis is a form of asexual reproduction in which organisms reproduce without fertilization. It is seen to occur naturally in bees.
  •  Drone bees are produced parthenogenetically. Female worker honey bees lay only unfertilized eggs and these eggs result in drone bees. 
  • So, the correct option is 'Honeybee'.