Question

Which one of the following statements is not true?
A. The flowers pollinated by flies and bats secrete food odour to attract them
B. Honey is made by bees by digesting pollen collected from flowers
C. Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
D. Pollen grains of some plants cause severe allergies and bronchial afflictions in some people

Answer 1

Hint: Pollinators get attracted by colour and fragrance. So if a flower has a foul odor then the pollinators are not attracted to them.

Complete answer:1. The flowers which get pollinated by insects and bats are usually large, colorful, and have fragrance.
2. Bees make honey by nectar and pollen. Bees collect pollen and nectar in the spring when most flowers and plants are in the bloom. They collect them in their stomach for about an hour, the nectar mixes with the proteins and enzymes produced by the bees, which convert nectar into honey. 3. As pollen grains are rich in nutrients so it has become a fashion for us in recent years to use pollen tablets as food supplements. On the other hand, pollen can withstand high temperatures and strong acids and alkali. No enzyme that degrades pollen is so far known. 4. Most of the pollen that causes allergic reactions comes from the trees, weeds, and grasses. These plants make small and dry pollen grains that travel by the wind. Grasses are the most common cause of allergy. Ragweed is the main cause of weed allergies.
So, the correct option is A

Note: Pollen is a powder made of pollen grains, which produce sperm cells (male cells used for reproduction) of seed plants. The pollen grains are actually haploid male gametophytes.