Home
Class 11
BIOLOGY
The heterosporous pteridophyte show cert...

The heterosporous pteridophyte show certain characteristics, which are precursor to the seed habit in gymnosperms. Explain

Text Solution

AI Generated Solution

To explain how heterosporous pteridophytes exhibit characteristics that are precursors to the seed habit in gymnosperms, we can break down the explanation into the following steps: ### Step-by-Step Solution: 1. **Definition of Heterosporous Pteridophytes**: - Heterosporous pteridophytes are plants that produce two different types of spores: microspores (male) and megaspores (female). This is in contrast to homosporous pteridophytes, which produce only one type of spore. **Hint**: Remember that heterosporous means "different spores" while homosporous means "same spores". ...
Promotional Banner

Topper's Solved these Questions

  • PLANT KINGDOM

    NCERT EXEMPLAR ENGLISH|Exercise LONG ANSWER TYPE QUSTIONS|5 Videos

  • PLANT KINGDOM

    NCERT EXEMPLAR ENGLISH|Exercise VERY SHORT ANSWER TYPE QUSTIONS|5 Videos

  • PLANT GROWTH AND DEVELOPMENT

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Question|3 Videos

  • RESPIRATION IN PLANTS

    NCERT EXEMPLAR ENGLISH|Exercise LONG ANSWER TYPE QUESTIONS|5 Videos

Similar Questions

Explore conceptually related problems

Heterosporous pteridophytes show certain characteristics, which are precursor to the seed habit in gymnosperms. One of such characteristics is

Characteristic of Angiosperms which distinguish them from gymnosperms

Which is characteristic feature of gymnosperms

Which one of the following characteristics can be used to distinguish gymnosperms from angiosperms ?

Seed habit originated in certain

Which one of the following feature/event in pteridophytes is a precursor to the seed habit that considered an important step in evolution?

Read the following statements and select the correct option:- A. Gymnosperm does not show xerophytic character. B. In Cycas , coralloid roots are associated with fungi. C. All gymnosperms are heterosporous. D. In conifers , needle - like leaves reduce the surface area. How many above statement are correct ?

statement 1: In heterosporous pteridophytes, development of zygote into young embryo takes place within the female gametophyte. statement 2: Heterospory is one of the essentiality for seed habit in plants.

Which of the following pairs of organisms are correctly matched with their description ? 1. Pteridophytes which are heterosporous : Selaginella , salvinia 2. Gymnosperms with branched stem : Pinus , Cedrus 3. Algae with haplo - diplontic life cycle : Ectocarpus, polysiphonia 4. Bryophytes with protonema stage : polytrichum , sphagnum

Consider the following statements 1. In pteridophytes, the phloem lacks companion cells. 2. The xylem lacks vessels in majority of pteridophytes. 3. Heterosporous pteridophytes have monoecious gametophytes. 4. Water is essential for fertilization in pteridophytes. Which of these statements are correct?