Biology · Environmental Studies

Biology of Insects and Pollination

861 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 zoology insects and human welfare bee keeping apiculture apiculture, sericulture and fisheries

Which of the following statement is correct?

  1. Apis indica is the largest wild honey bee.

  2. Wax is waste material of honey bee.

  3. Von Frisch discovered the news transmission methods in the honey bee.

  4. Drone of the honey bee is diploid.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

1st statement is incorrect as Apis dorsata laboriosa and not Apis indica, the Himalayan honey bee, is the world's largest honey bee.

2nd statement is incorrect as bees wax is not a waste material, it is secreted by special wax glands present in the abdomen. It is used for making the hives of honeybee.
3rd statement is correct as Karl Von Frisch discovered the transmission methods in the honey bee during a number of experiments and found out that when a foraging bee returns to the hive, it performs a waggle dance. 
4th statement is incorrect as drones of the honey bee are haploid and not diplod. They develop parthenogenetically from unfertilized eggs.
Therefore, the correct answer is option C.

Multiple choice zoology insects and human welfare bee keeping apiculture apiculture, sericulture and fisheries

A typical hive contains approximately 20,000 bees classified as either the female queen (n=1), male drones (n=20), and workers (the balance of the hives population). The queen's primary function is to mate with drones and lay the eggs that give rise to the following generation, whereas the worker bees fulfill all day-to-day functions of the hive, including foraging, guarding the nest, tending to the drones and to the queen in addition to constructing the hive.
The European honey bee, Apis mellifera, is capable of producing an inhibitory signal, the stop signal, which can be triggered by encounters with dangerous conditions or organisms. This stop signal reduces recruitment of other foragers to a dangerous location. For example, A . mellifera foragers produce stop signals to inhibit waggle dancing for dangerous food sources.
A stop signal is a 300 - 400 Hz vibrational signal with a duration of approximately 150 mts that a worker usually delivers while butting its head into the body of the receiver, causing the receiver to momentarily freeze. Attacks by wasps and spiders (among other predators) elicit stop signals, which inhibit waggle dancing. However, stop signals are also used in other inhibitory contexts that are not associated with danger.
Each of the following activities plausibly stimulate foraging inhibition and contribute to the overall success of the colony except

  1. House-hunting bees speed up nest site decision-making with stop signals that inhibit recruitment for competing nest sites.

  2. Foraging bees use stop signals to communicate conditions of food source overcrowding at a particular foraging site.

  3. Guard bees use stop signals to communicate when the nest is under attack. This signal seeks to keep vulnerable bees in the safety of the nest during the period of attack.

  4. The queen secretes pheromones that inhibit reproduction among all bees other than selected drones.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

'An' as house chasing honey bees additionally called as working drones as per the section essential capacity is to watch the home, which incorporates creating inhibitory flags or stop signals while experiencing hazardous conditions or life forms or assaults by different predators.

So, the correct option is 'House-hunting bees speed up nest site decision-making with stop signals that inhibit recruitment for competing nest sites.'

Multiple choice zoology trends in economic zoology bee keeping apiculture insects and human welfare

Males of honey bee colony are 

  1. drones

  2. workers

  3. soldiers

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

Drones are the male bees of the honey colony. They do not involve in collection of nector and pollen. But plays a contributing role in temperature regulation of the hive. Their main role is to mate with queen during breeding season. 

Multiple choice zoology trends in economic zoology bee keeping apiculture insects and human welfare

Beewax is the secretion of abdominal glands of  

  1. drones

  2. worker bees

  3. queen bees

  4. worker and queen bees.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Beeswax is a natural wax produced by honeybees of the genus Apis. The wax is the secretion of of the glands present in the abdominal segments of worker bees which discard it in the hive . Chemically, beeswax consists of mainly esters of fatty acids and various long chain alcohols. It is used in making polishes, candles, as a lubricant , waterproofing agent and also in cosmetics.

So, the correct option is 'Option B' .

Multiple choice biology pollination structure of male and female reproductive structures structure of ovule gynoecium

Pollen grains of flower pollinated by wind or insects are not ............

  1. Rough and sticky

  2. Large and showy

  3. Rough and dry

  4. Smooth and dry
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pollen grains to be carried by wind as well as by insects will not be heavy in weight or showy. This is because it causes the wind as well as insects tough to perform pollination. They prefer light weight as well as winged ones.

Multiple choice biology reproduction structure of male and female reproductive structures structure of ovule gynoecium

Wind pollinated plants differ from insect pollinated plants in having ....

  1. Small petals and sticky pollen

  2. Small coloured petals and heavy pollen

  3. Coloured petals and large pollen

  4. No petals and light pollen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wind pollinated plants will have light weight pollens which are mostly winged and are thus easy to be carried away by wind. Whereas the plants where the pollinating agents are insects, the petals will be bright and scented so that the insects get attracted to it and acts as pollinator.

Multiple choice biology animal behaviour ethology coordination in human beings- chemical control endocrine system in humans

The production of sounds by some insects by rubbing together parts of the body, usually to attract a female, is known as

  1. Undulation

  2. Stridulation

  3. Cacophony

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

Stridulation is the act of producing sound by rubbing together certain body parts. This behavior is mostly associated with insects, but other animals are known to do this as well, such as a number of species of fish, snakes and spiders. The mechanism is typically that of one structure with a well-defined lip, ridge, or nodules (the "scraper" or plectrum) being moved across a finely-ridged surface (the "file" or stridulitrum—sometimes called the pars stridens) or vice versa, and vibrating as it does so, like the dragging of a phonograph needle across a vinyl record. Sometimes it is the structure bearing the file which resonates to produce the sound, but in other cases it is the structure bearing the scraper, with both variants possible in related groups. Common onomatopoeic words for the sounds produced by stridulation include chirp and chirrup.

So the correct option is 'Stridulation'.

Multiple choice movement in plants living world of plants - plant physiology biology

When touched by an insect, the leaf of Drosera is bent. What is the name of this process?

  1. Photonasty

  2. Hydronasty

  3. Thigmonasty

  4. Thermonasty
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When the marginal glandular hair of Drosera leaf comes in contact with the insect body, they show thigmonastic (haptonastic) movement. It is the nastic movement (paratonic variation movement) determined by the external stimulus of touch or contact but the direction of movement is prefixed, determined by the structure of the responsive organ. Thus the correct answer is option C.

Multiple choice evs super senses sleeping time animal senses sense organs in animals

Which of the following shows aestivation? 

  1. Bees

  2. Sparrow

  3. Rat

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

Aestivation is the type of summer sleep, performed by cold-blooded animals. It helps in maintaining the body temperature by avoiding the excessive water loss and any internal body damaged due to high temperatures. It is performed by bees, snails, earthworms, salamanders, frogs, earthworms, crocodiles, tortoise, etc.

So, the correct option is 'Bees'.

Multiple choice botany pollination, fertilization and development of endosperm and embryo agents of pollination environmental conservation and biodiversity pollination and fertilization

The pollination by ........ is called as zoophily.

  1. Wind

  2. Water

  3. Animals

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Pollination carried by the animals is known as zoophily. The coloured corolla attracts insects for pollination. It has sticky pollens which attach to the insect and are transferred from the anther to the stigma of the flower. For example, Arctium.
Pollination carried by the wind is known as anemophily. It has lighter pollens or winged pollens which are easily carried by the wind. For example, pine.
Pollination carried by water is hydrophilly. It has lighter pollen which is easily carried by the water currents. For example, hydrilla.
Multiple choice botany pollination, fertilization and development of endosperm and embryo agents of pollination environmental conservation and biodiversity pollination and fertilization

In Chiropterophily, pollination is performed by

  1. Bats

  2. Birds

  3. Squirrels

  4. Insects
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Pollination which occurs by means of bats is called Chiropterophily.
Pollination which occurs by means of wind is called Anemophily.
Pollination which occurs by means of insects is called Entomophily.
Pollination may also occur by various other pollinating agents such as squirrels but any specific term is not given for such type of pollination.
So, the correct answer is A.
Multiple choice botany pollination, fertilization and development of endosperm and embryo agents of pollination environmental conservation and biodiversity pollination and fertilization

Pollination performed by bats is

  1. Myrmecophily

  2. Entomophily

  3. Ornithophily

  4. Chiropterophily
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Myrmecophily is the pollination of flowers by means of ants.
Entomophily is the pollination of flowers by means of insects.
Ornithophily is the pollination of flowers by means of birds.
Chiropterophily is the pollination of flowers by means of bats.
So, the correct answer is D.