STD 12 - 5. molecular basis of inheritance — NEET STD 11 Science — Question

Cell envelop is chemicaly complex structure it consists of a tightly bound three layeyed structure, which layer is semi permeable in nature ?

When man eats fish which feeds onzooplanktons which have eaten small plants,the producer in this chain is

The pollens are released in large numbers to ensure

Select the wrong statement for placentation.
i. In Mustard and Argemone, the ovary is one-chambered but it becomes two-chambered due to the formation of the false septum.
ii. In Dianthus and Primrose, the placentation is called free central.
iii. In basal placentation, the placenta develops at the base of the ovary and many ovules are attached.
iv. In sunflower and marigold, basal placentation present.
v. In mustard and Argemone, free central placentation present.

Mesosome in a bacterial cell is

Mosses occur in moist place because

It takes very long time for pineapple plants to produce flowers. Which combination of hormones
can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

Which one of the following statements is not true?