Question

Which of the following row(s) is/are correctly matched?
$\begin{array}{ccc}\text{Column I}& \text{Column II}& \text{Column III}\\ \text{(A)}\text{Heterotrophs}& \left(i\right)\text{Algae}& \left(1\right)\text{Animals}\\ \text{(B)}\text{Parasitic}& \left(ii\right)\text{Cuscuta}& \left(2\right)\text{Haustoria}\\ \text{(C)}\text{Insectivorous}& \left(iii\right)\text{Drosera}& \left(3\right)\text{Insects}\\ \text{(D)}\text{Symbiosis}& \left(iv\right)\text{Pea}& \left(4\right)\text{Rhizobium}\end{array}$

• A. A-i-1
• B. B-ii-2
• C. C-iii-3
• D. D-iv-4

Answer 1

Answer: (B), (C), (D)

The correct options are
B B-ii-2
C C-iii-3
D D-iv-4

• Heterotrophic organisms cannot produce their own food. They do not contain chlorophyll. Mango contains chlorophyll and can perform photosynthesis. Hence, it is an autotrophic organism.
• Parasitic plants derive nutrition from another living plant called host. They have special roots called haustoria which can penetrate deep into host living tissue. E.g., Cuscuta.
• Insectivorous plants feed on insects to fulfill their nitrogen requirements. Their leaves are modified to trap insects. E.g., Drosera, pitcher plant, etc.
• Legumious plants, like pea live in symbiotic association with rhizobium. Plant provides shelter to the bacteria. In return, bacteria fixes atmospheric nitrogen for the plant.