Read the following five statements (a–e) and select the option with all correct statements:$\newline$(a) Mosses and lichens are the first organisms to colonize a bare rock.$\newline$(b) Selaginella is a homosporous pteridophyte. $\newline$(c) Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.$\newline$(d) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

Select the correct statement

Which of the following would appear as the pioneer organisms on bare rocks?

Life cycle of Ectocarpus and Fucus respectively are

Zygotic meiosis is characteristic of

Plants which produce characteristic pneumatophores and show vivipary belong to

Pneumatophores occur in

Which of the following statements is correct?

Winged pollen grains are present in

Which one is wrongly matched?

Which of the following organisms are known as chief producers in the oceans?

Which of the following pairs is of unicellular algae?

Strobili or cones are found in:

Gemmae are present in:

Which of the following algae contains mannitol as reserve food material?

Genera like $Selaginella$ and $Salvinia$ produce two kinds of spores. Such plants are known as:

Which of the following algae produce Carrageen?

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: $\newline$Assertion A: The first stage of gametophyte in the life cycle of moss is the protonema stage. $\newline$Reason R: Protonema develops directly from spores produced in capsule. $\newline$Choose the most appropriate answer from the options given below:

Identify the pair of heterosporous pteridophytes among the following:

$\newline$Read the following statements and choose the set of correct statements: $\newline$ In the members of Phaeophyceae $\newline$A. asexual reproduction occurs usually by biflagellate zoospores. $\newline$ $\newline$B. Sexual reproduction is by oogamous method only. $\newline$ $\newline$C. Stored food is in the form of carbohydrates which is either mannitol or laminarin. $\newline$ $\newline$D. The major pigments found are chlorophyll a, c, and carotenoids and xanthophyll. $\newline$ $\newline$E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.