STD 11 - 6. Anatomy flowering plants — NEET STD 11 Science — Question

$(1)$ Zooplanktons are primary producers in an aquatic ecosystem.

$(2)$ Decomposition is largely an oxygen requiring process.

$(3)$ In a natural ecosystem, fishes, wolf, etc. are carnivore.

$(4)$ The amount of energy decreases in each successive trophic level.

$(a)\; DNA$ is negatively charged molecule and so it is loaded on gel towards the Anode terminal

$(b) \;DNA$ fragments travel along the surface of the gel whose concentration does not affect movement of $DNA.$

$(c)$ Smaller the size of $DNA$ fragment larger is the distance it travels through it.

$(d)$ Pure $DNA$ can be visualized directly by exposing UV radiation.

Choose correct answer from the options given below