[" Which of the following is correctly matched? "],[[" (1) Aerenchyma - Opuntia "],[" (2) Age pyramid - Biome "],[" (3) Parthenium hysterophorus - Threat to "],[" (4) Stratification - Population "]]

Which of the following pairs are correctly matched ? (a) 1 and 2 (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3

Which of the following colloidal systems correctly represents 1, 2 and 3?

[" Which of the following is correctly matched "],[" pair? "],[" (1) Exine - pectocellulosic "],[" (2) Intine - sporopollenin "],[" (3) Generative cell - has large and irregularly "],[" shaped nucleus "],[" (4) Vegetative cell - has abundant food "],[" reserve "]

Which of the following pairs are correctly matched ? 1. Amensalism - A population is inhibited whereas the other populations remain unaffected. 2. Predation - A population uses the other as its food. 3. Mutualism - Interaction favourable to both and obligatory. Select the correct answer using the codes given below : Answer codes :

Match the following {:(1,2,3,4):}

Which of the following pairs are correctly matched? (1) Poikilothermous - Birds and mammals (2) Agnath - Petromyzon and Myxine (3) Tunicates - Ascidia, Salpa and Doliolum (4) Cartilaginous fishes - Betta and Labeo

Which of the following type of age pyramid reflects a stable population growth ?