Introducing Biology
Select the correct statement.
Phloem in gymnosperms lacks.
Phloem in Gymnosperms lacks both sieve tube and companion cells. They only contain seive cells for conduction of food material and also have albuminous cells that have functions similar to that of companion cells.
So, the correct answer is 'Both sieve tubes and companion cells'
Select the correct statement.
In bryophytes and pteridophytes, transport of male gametes requires
Which of the following organism are known as chief producers in the oceans?
Which of the following statements is correct?
Which one is wrongly matched?
Which of the following is responsible for peat formation?
Read the following five statements ( A to E ) and select the option with all correct statements. (A) Mosses and Lichens are the first organisms to colonize bare rock. (B) Selaginella is a homosporous pteridophyte. (C) Coralloid roots in Cycas have VAM. (D) The main plant body in bryophytes is gametophytic whereas in pteridophytes it is sporophytic. (E) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.
Which one is a wrong statement?
In angiosperms, microsporogenesis and megasporogenesis
Gametophyte and sporophyte are independent of each other in which of the following groups?