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 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

Name the hormone released during the following events$:$
Development of a caterpillar to moth

  1. Testosterone

  2. Juvenile hormone

  3. Adrenaline

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

  • Metamorphosis refers to the way that organisms develop, grow, and change form.
  • Metamorphosis majorly occurs in insects.
  • metamorphosis has four stages i.e egg, larva, pupa and adult.
  • Caterpillars, maggots and grubs are all just the larval stages of insects.
  • The hormone released during the development of a caterpillar to moth(adult insect) is called juvenile hormone(JH).
So, the correct answer is 'Juvenile hormone'.

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

Butterflies have the typical ______ stage insect life cycle.

  1. One

  2. Two

  3. Three

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

  • Typically, insects including butterflies have 4 stages in their life cycle.
  • The first stage is egg. when the eggs hatch the new insect is called a larva (second stage).
  • The third stage i.e. pupa represents the transition between larva and adult ( fourth stage).
So, the correct option is 'Four'.

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

Which of the following hormone regulates the metamorphosis of insects?

  1. Pheromone

  2. Thyroxine

  3. Ecdysone

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Molting hormone or Ecdysone is produced by the prothoracic glands which regulates metamorphosis.
  • It's principle function is to stimulate a series of physiological events (collectively known as apolysis) that lead to synthesis of a new exoskeleton.
  • During this process, the new exoskeleton forms as a soft, wrinkled layer underneath the hard parts (exocuticle plus epicuticle) of the old exoskeleton.
So, the correct option is 'Ecdysone'.

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

Which of the following hormones regulates growth and metamorphosis in insects?

  1. Brain hormone

  2. Juvenile hormone

  3. Prothoracicotrophic hormone

  4. Ecdysone
Reveal answer Fill a bubble to check yourself
B,D Correct answer
Explanation

  • The process of growth and metamorphosis in insects is controlled by secretions of prothoracic glands and corpora allata which are ecdysone and juvenile hormone respectively.
  • Ecdysone stimu­lates growth and shedding of the old cuticle of the larva and the new cuticle is formed beneath the old cuticle.
  • The juvenile hormone keeps the larval cells active and also controls the qualitative changes in the body during metamorphosis.
So, the correct option is 'Juvenile hormone' and 'Ecdysone'.

Multiple choice botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

Plants of which one of the following groups of genera are pollinated by the same agency?

  1. Triticum, Cocos, Mangifera

  2. Ficus, Kigelia, Casuarina

  3. Salvia, Morus, Euphorbia

  4. Bombax Butea, Bauhinia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Salvia, Morus, Euphorbia are pollinated by insects (entomophily)

So the correct answer is 'Salvia, Morus, Euphorbia'

Multiple choice botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

Which of the following method is applicable for pollination in gymnosperms?

  1. Anemophilous

  2. Entemophilous

  3. Hydrophilous

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

Phanerogamae are the sub-kingdom of kingdom Plantae. They include seed bearing and flowering plants. They are further grouped into angiosperms and gymnosperms. Gymnospermic plants are pollinated by wind that is anemophilous.

So, the correct answer is 'Anemoplilous'

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Read the following five statements (A - E) and answer as asked next to them.
(A) In Equisetum the female gametophyte is retained on the parent sporophyte
(B) In Ginkgo male gametophyte is not independent
(C) The sporophyte in Riccia is more developed than that in Polytrichum
(D) Sexual reproduction in Volvox is isogamous
(E) The spores of slime molds lack cell walls
How many of the above statements are correct ?

  1. Three

  2. Four

  3. One

  4. Two
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The spore of Equisetum germinate shortly after shedding and gives rise to form prothallus. Prothalli of Equisetum are basically monoecious and the gametophytes are rarely seen. The simplest known sporophyte among bryophytes is that of Riccia while highest evolved known is Bryopsida (Polytrichum, Pdgonatum). Sexual reproduction in Volvox is oogamous type. The spores in slime molds (e.g., Physarum) are haploid, unicellular, usually globose with smooth, spiny or reticulately thickened cell walls.

So, the correct answer is 'One'.
Multiple choice gymnosperms pictorial feature of plant kingdom biology

In gymnosperms pollination is exclusively by?

  1. Animals

  2. Wind

  3. Water

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

Gymnosperms are seed plants that lack flowers, relying primarily on wind for pollination. Wind pollination ensures efficient transfer of pollen from male to female cones over large distances. Animals and insects are typically involved in angiosperm pollination.

Multiple choice

Many of us love honey, but are bees also endangered?

  1. Yes, they are

  2. No, there are still a lot of bees
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Many bee species are currently facing population declines due to habitat loss, pesticides, and climate change, leading to endangered status for several types.

Multiple choice

What class of animal is a spider?

  1. insect

  2. arachnid

  3. amphibian

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

Spiders are arachnids, which are characterized by having eight legs and two body segments. Insects have six legs and three body segments.

Multiple choice biology the flower structure of a bisexual flower growth and development in plants basics of leaf and flower

Plant honey is secreted by

  1. Digestive glands

  2. Nectaries

  3. Oil ducts

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

Plant honey is secreted by nectaries. Nectar is a sugar-rich liquid produced by plants in glands called as nectaries, either within the flowers with which it attracts pollinating animals or by extrafloral nectaries, which provide a nutrient source to animal mutualists, which in turn provide antiherbivore protection. Common nectar-consuming pollinators include bees, butterflies and moths, hummingbirds, and bats.
Therefore, the correct answer is option B.

Multiple choice biology the flower structure of a bisexual flower growth and development in plants basics of leaf and flower

Nectary of Euphorbia is an example of

  1. Complex tissue

  2. Secretory tissue

  3. Excretory tissue

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

Nectary of Euphorbia is an example of secretory tissue. The tissues that are concerned with the secretion of gums, resins, volatile oils, nectar latex and other substances in plants are called as secretory tissues. These tissues are divided into two groups: laticiferous tissues and glandular tissues. 

Thus, the correct option is B.

Multiple choice biology the flower structure of a bisexual flower growth and development in plants basics of leaf and flower

Stigma is sticky

  1. To produce scents to attract birds and insects

  2. To hold pollen grain strongly

  3. There is no known function

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

Stigma is the part of the female reproductive part in flower where the pollen grain lands after pollination. It is the one who decides the compatibility of pollen with the plant and it is sticky so that is able to hold the pollen strongly.

So the correct option is "To hold the pollen grain strongly"

Multiple choice vernalisation plant growth growth and development plant growth and development biology

Fragrant flowers with well developed nectaries are an adaptation for _______.

  1. Hydrophily

  2. Anemophily

  3. Entomophily

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Entomophilous flowers produce an odour which many be pleasant (e.g., jasmine) or foul(e.g., Aristolochia, Arum Rafflesia). Smell and nectar attract flies and other insects.