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 biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

An insect helping in pollination is

  1. Drosophila

  2. Musco nebulo

  3. Bombyx mori

  4. Apis dorsata

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Most of the major crops heavily depend on the pollination through the giant honey bee, Apis dorsata. Some of the crops are cotton, mango, coconut, coffee, pepper, star fruit, and macadamia.
So the correct option is Apis dorsata.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

The nectar is produced in the flowers which are pollinated by 

  1. Wind

  2. Water

  3. Man

  4. Insects

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Many flowers produce nectar. When an insect lands on a flower to feed, pollen grains stick to its body. As the insect moves to another flower of the same species, these pollen grains are transferred to the flower’s stigma and pollination occurs.

So the correct option is 'Insects'.

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

Some plants harbour ants to save themselves from other animals. It is

  1. Anemophily

  2. Entomophily

  3. Myrmecophily

  4. Hydrophily

  5. Zoophily

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anemophily is a type of pollination in which pollination takes place with the help of wind. Entomophily is a type of pollination in which pollination takes place through insect. Myrmecophily is a mutual association of some plants with ants to save themselves from other animals. Hydrophily is a type of pollination in which pollination occurs through flow of water. 

Thus, the correct answer is option C.

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

Moth Pronuba($=$ Tegaticula) passes its larval stage in plant pollinated by it. The plant is?

  1. Ficus cairica

  2. Yucca

  3. Tagetes

  4. Cosmos

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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. The Yucca moth is well-known for its relationship with the Yucca plant. The Yucca moth’s larvae are relying on the seeds of the Yucca plant as a primary food source. No one can exist without the other, creating an obligate mutualism between the moth and the plant. It is true for types of Yucca moths such as Tegeticula .


 So correct answer is option B.

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

In Salvia, pollination occurs through the agency of

  1. Insects

  2. Bats

  3. Ants

  4. Snails

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In Salvia, pollination occurs through the agency of insects. When insects are the pollinating agents, then pollination is known as entomophily. These are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Majority of insect-pollinated flowers are large-sized. Small-sized flowers are clustered into an inflorescence. Flowers are colourful and fragrant. Nectaries are present. The pollen grain is sticky.

Salvia genus belongs to family Labiatae. In these plants, the gametopetalous corolla is two-lipped. The lower lip provides the platform for the visiting insect and the upper lip just protects the floral organs. In these plants, cross-pollination occurs only when the pollen-dusted bee visits older flowers with mature gynoecium.

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

Pollination with the help of snails is called.

  1. Myrmecophily

  2. Malacophily

  3. Lepidopterophily

  4. Entomophily

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pollination is processed by the agent which transfers pollen from the pollen sac or anther to the stigma or ovule in the flower. Pollination done by snails is called malacophily. Such type of flowers is called as malacophilous. These flowers achieve pollination only by the help of snails and slugs.

Thus, the correct answer is malacophily.

Correct option is B.

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

Fragrant flowers with well developed nectaries are an adaptation for

  1. Zoophily

  2. Anemophily

  3. Entomophily

  4. Hydrophily

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fragrant flowers with well-developed nectaries are an adaptation for entomophily. In entomophily, insects are the pollinating agents. These are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Majority of insect-pollinated flowers are large-sized. These flowers are colorful and possess fragrance to attract the insects. Nectar is given as a reward to insects. Thus, option C is correct.

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

Pollination in Lotus is carried out by

  1. Wind

  2. Water

  3. Insects

  4. All the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Lotus has bisexual flowers but anthers and stigma mature at different times so self pollination doesn't occur. Thus, Lotus is cross-pollinated by beetles. Beetles are attracted to the Lotus flower by the odour of the nectar. Beetle enter the flower at night and stays there for the whole night. The flower opens in the morning and beetle visits another flower at night. Thus, as the beetle visits different flowers, pollen from one flower are transferred to the stigma of different flowers because pollen get attached to the body of the beetles. Hence, this type of cross-pollination occurs in Lotus by means of insects i.e. beetles. So, the correct answer is C.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Entomophilous flowers are related to

  1. Honey bees

  2. Wind

  3. Water

  4. Hairy Mammals

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Entomophilous flowers are the flowers that are pollinated by insects. From all the options given in the question, honey bees are the insects. So, entomophilous flowers are related to honey bees as honey bees pollinate them.
So, the correct answer is A.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Butterflies pollinate

  1. Bluish flowers

  2. Violet flowers

  3. Reddish flowers

  4. Purple flowers

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Butterflies are attracted to the flowers that are scented, showy and bright in color. Butterflies can see the colors in ultra violet range and their most preferred color of flowers for pollination is blue. Hence, butterflies pollinate bluish flowers.
So, the correct answer is A.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Insects visit flowers to help in pollination.

  1. True

  2. False

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pollination is the transfer of pollen from a male part of a plant (anthers) to a female part of a plant (stigma), enabling later fertilisation and the production of seeds, most often by an animal or by the wind. Pollination is a very important part of the life cycle of plants. Entomophily or insect pollination is a form of pollination whereby pollen of plants, is distributed by insects. A major role of the insect is that of pollinator, meaning they transfer pollen from plant to plant (or sometimes within the same plant), which results in the development of a seed.

So the given statement is true.

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

Which one is applicable to insect pollinated flowers?

  1. Flowers are very small produced in large quantities

  2. Flowers are not prominent and without nectar

  3. Flowers are conspicuous and scented having nectar

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When the flowers are pollinated by insects, it is called entomophily. Such flowers has evolved mechanisms to make themselves more appealing or conspicuous to insects by having bright colors or scented flowers, nectar or appealing shapes and patterns.
Thus, the correct answer is option (C), 'Flowers are conspicuous and scented having nectar'.

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

The insect Blastophaga grossorum is associated with the pollination of

  1. Mango

  2. Ficus

  3. Paddy

  4. Nelumbium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
There is a tight mutual dependence between the Ficus species and an insect called Blastophaga grossorum that pollinates it. It is known as Coevolution. This relationship has developed and is persistent for millions of years now.
So, the correct answer is, 'Ficus'.
Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Which of the following is not a example of sex pheromone? 

  1. Bombykol

  2. Muskone

  3. Formic acid

  4. Civetone

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Formic acid is the simplest carboxylic acid and occurs naturally, mostly in ant venom. 

Sex pheromones are pheromones released by an organism to attract an individual of the opposite sex, encourage them to mate with them, or perform some other function closely related with sexual reproduction. Volatile pheromones are characterized as sex pheromones and usually form a specific odour and are focused on alarm sensitivity. 
Bombykol, the sex pheromones of silkworm moths, civetone from the civet cat and muskone from the musk deer are examples of sex pheromones.