Life Cycles in Plants
Life Cycles in Plants: Overview
This topic covers concepts, such as, Haplontic Life Cycle, Diplontic Life Cycle, Haplo-diplontic Life Cycle & Plants Life Cycle and Alternation of Generation etc.
Important Questions on Life Cycles in Plants
Consider the following four statements. Which of the following statements are incorrect?
(A) The sporophyte in liverworts is more elaborate than in mosses.
(B) Salvinia is heterosporous.
(C) The life cycle of all seed-bearing plants are diplontic.
(D) In Pinus, male and female cones are borne on different trees.
Life cycle of Ectocarpus and Fucus respectively are
Which one of the following has haplontic life cycle?
______ is the initial stage of the sporophyte.
A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has
Comparable to angiosperms, which of the following algae exhibits diplontic life cycle?
In most of the plants meiosis results in formation of:
Identify diagrams & select the correct option with their suitable examples.
Life cycle of Ectocarpus and Fucus respectively are:
Life cycle of Ulothrix is shown in the diagram. The correct ploidy levels at the four stages and are
Given is a picture of bryophyte. The correct ploidy levels of the indicated structures are
Haplodiplontic life cycle is found in
Read the'statement to & select wrong statement
(A) The pteridophytes include horse tails & fern
(B) Pteridöphytes are the first terrestrial plants to possess vascular tissues xylem & phloem.
(C) In Bryophytes the dominant phase in the life cycle is the sporophytic plant body.
(D) In Pterictophytes, the main plant body is a gametophyte
Meiosis in Spirogyra, Ulothrix, Chlamydomonas and most algae/thallophytes is
In these figures, two life cycles are described. Mark the correct option.
The life cycle in which, the gametophyte is not free-living and represented by single to few celled stages, is
How many of the given statements (I-IV) about different plant groups are not correct?
I- Majority of pteridophytes are heterosporous.
II - Pollination in gymnosperms is direct and anemophilous.
III - The first stage of moss gametophyte is leafy stage, which develops directly from spore.
IV - In flowering plants, endosperm is triploid and is pre-fertilisation structure.
Choose the odd one w.r.t. life cycle pattern.
Haplodiplontic life cycle is found in:
Which of the following is not having a haplontic life cycle?
