Question

Mohit performed an analysis of two different soil samples from two areas A and B. He recorded these results : Soil Sample A : Lignin 40%, Sugar 10%, Chitin 45%, Nitrogen 5% Soil Sample B : Lignin 5%, Sugar 35%, Chitin 15%, Nitrogen 45% Which of these is true about their rate of decomposition in both the soil ?

Select the following statements that are true for insect pollinated flowers from the given options. (i) Majority of these flowers are large, colourful and rich in nectar. (ii) Nectars and seeds are usual floral rewards to attract insects for pollination. (iii) Pollen grains of these flowers are generally mucilaginous so as to stick to the body of the insects. (iv) A foul odour is emitted by some flowers to attract flies and beetles. Choose the correct answer :

Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by

Given below is a flower with its characteristic features specialised for the most common type of abiotic pollination. Answer the following questions based on the above diagram : (a) Name the mode of abiotic pollination that will be adopted by the given plant species in the above picture. (b) State the need of exposed large feathery stigmas for the flower. (c) What will be the two important adaptations in the pollen grains of the flowers pollinated by the above mode of pollination ? (d) What could be the probable reason for the petals being small and non-green ?