AIPMT 2011 Mains Mock Test

The cells lining the blood vessels belong to the category of:

Consider the following statements $(A-D)$ about organic farming:$A.$ Utilizes genetically modified crops like Bt cotton.$B.$ Uses only naturally produced inputs like compost.$C.$ Does not use pesticides and urea.$D.$ Produces vegetables rich in vitamins and minerals.Which of the above statements are correct?

Select the correct statement with respect to diseases and immunisation:

$\text{Selaginella}$ and $\text{Salvinia}$ are considered to represent a significant step toward evolution of seed habit because:

Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?