- Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
- Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
- The flowers pollinated by flies and bats secrete foul odour to attract them
- Honey is made by bees by digesting pollen collected from flowers
Category: Biology mcqs
- They are harmful to human health
- They alter rainfall and monsoon patterns
- They cause increased agricultural productivity
- They have negative impact on agricultural land
- Plasmalemma
- Plasmodesmata
- Plastoquinone
- Endoplasmic reticulum
- Acrosome serves no particular function
- Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation
- The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
- Acrosome serves as a sensory structure leading the sperm towards the ovum
- Viruses possess their own metabolic system.
- Viruses contain either DNA or RN
- Viruses are facultative parasites.
- Viruses are readily killed by antibiotics.
- It is upright in shape
- Its base is broad
- Its shows energy content of different trophic level organisms
- It is inverted in shape
- It is similar to primary succession except that it has a relatively fast pace.
- It begins on a bare rock.
- It occurs on a deforested site
- It follows primary succession.
- Preformed antibodies need to be injected to treat the bite by a viper snake
- The antibodies against small pox pathogen are produced by T-lymphocytes
- Antibodies are protein molecules, each of which has four light chains
- Rejection of a kidney graft is the function of B-lymphocytes
- Cleistogamy
- Xenogamy
- Geitonogamy
- Chasmogamy
- Tetanus, tuberculosis, measles
- Diptheria, leprosy, plague
- Cholera, typhoid, mumps
- Malaria, mumps, poliomyelits
- Groundnut
- Maize
- Rice
- Mango
- Pinus
- Cycas
- Fucus
- Marchantia
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