Plant kingdom

Chloroplasts of certain algal taxa such as Euglenophyta are surrounded by three membranes while, Heterokontophyta and Cryptophyta have four membranes. The chloroplasts present in these organisms is a result of secondary…

In plant growth and development, which of the following sequence of events is correct?

During evolution of plants from growth in aquatic habitats to growth on land, which of the following processes would have been important to the plant? I. Development of mechanisms for vertical growth II. Development of…

Which of the following are homosporous pteridophytes? I. Selaginella II. Lycopodium III. Salvinia IV. Equisetum

Gametophyte and sporophyte are independent of each other in which of the following groups?

Which among the following is a rootless plant?

Algae are useful because they

Match the plant with the kind of life cycle it exhibits: List-I List-II (a) Spirogyra (i) Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte (b) Fern (ii) Dominant haploid…

Match items in Column I with those in Column II: Select the correct answer from the following.

Sphenopsida class belongs to __________.

Given below are two statements : Statement I : In gymnosperms, the male and female gametophytes remain within the sporangia. Statement II : In gymnosperms, seeds are not covered. In the light of the above statements,…

In which one of the following, the ovules are not enclosed by an ovary wall and remain exposed ?