Which of the following statement is correct ? (1) Ovules are not enclosed by ovary wall in gymnosperms (2) Selaginella is heterosporous, while Salvinia is homosporous (3) Horsetails are gymnosperms (4) Stems are usually unbranched in both Cycas and Cedrus

Which of the following statement is correct ?
(1) Ovules are not enclosed by ovary wall in
gymnosperms
(2) Selaginella is heterosporous, while Salvinia is
homosporous
(3) Horsetails are gymnosperms
(4) Stems are usually unbranched in both Cycas
and Cedrus
by

1 Answer

Answer :

(1) Ovules are not enclosed by ovary wall in
gymnosperms
by

Related questions

Which of the following statements is correct? (a) Ovules are not enclosed by ovary wall in gymnosperms. (b) Selaginella is heterosporous, while Salvinia is homosporous. (c) Horsetails are gymnosperms. (d) Stems are usually unbranched in both Cycas and Cedrus.

Description : Which of the following statements is correct? (a) Ovules are not enclosed by ovary wall in gymnosperms. (b) Selaginella is heterosporous, while Salvinia is homosporous. (c) Horsetails are gymnosperms. (d) Stems are usually unbranched in both Cycas and Cedrus.

Last Answer : (a) Ovules are not enclosed by ovary wall in gymnosperms.

Select the correct statement. (a) Sequoia is one of the tallest trees. (b) The leaves of gymnosperms are not well adapted to extremes of climate.(c) Gymnosperms are both homosporous and heterosporous. (d) Salvinia, Ginkgo and Pinus all are gymnosperms.

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Last Answer : (a) Sequoia is one of the tallest trees.

Select the mismatch. (a) Cycas – Dioecious (b) Salvinia – Heterosporous (c) Equisetum – Homosporous (d) Pinus – Dioecious

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Last Answer : (a) A, D and E

.Pinus differs from mango in having (a) tree habit (b) green leaves (c) ovules not enclosed in ovary (d) wood.

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Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct? A B C D (a) Chara Marchantia Fucus Pinus (b) Equisetum Ginkgo Selaginella Lycopodium (c) Selaginella Equisetum Salvinia Ginkgo (d) Funaria Adiantum Salvinia Riccia

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Description : Difference between homosporous and heterosporous pteridophytes -Biology

Last Answer : answer:

Distinguish between homosporous and heterosporous condition in pteridophytes.

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Evolutionary important character of Selaginella is (a) heterosporous nature (b) rhizophore (c) strobili (d) ligule.

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Placentation in which ovules develop on the inner wall of the ovary or in peripheral part, is (a) free central (b) basal (c) axile (d) parietal.

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Read the following statements (A – E) and answer the question which follows them. (A) In liverworts, mosses and ferns gametophytes are free-living. (B) Gymnosperms and some ferns are heterosporous. (C) Sexual reproduction in Fucus, Volvox and Albugo is oogamous. (D)The sporophyte in liverworts is more elaborate than that in mosses. (E) Both, Pinus and Marchantia are dioecious. How many of the above statements are correct? (a) Three (b) Four (c) One (d) Two

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Which one of the following is categorised under living fossils? (a) Pinus (b) Cycas (c) Selaginella (d) Metasequoia

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The tissue which attaches the ovules inside the ovary is

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The floral part that receives pollen-grains during pollination is (1) ovary (2) style (3) stigma (4) ovules

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gymnosperms are heterosporus. but Cycas bears both male and female on one tree. how? -Biology

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Last Answer : answer:

gymnosperms are heterosporus. but Cycas bears both male and female on one tree. how? -Biology

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Last Answer : answer:

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Inflorescene with unbranched axis is called

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Last Answer : answer:

Bryophytes are dependent on water, because (a) water is essential for their vegetative propagation (b) the sperms can easily reach upto egg in the archegonium (c) archegonium has to remain filled with water for fertilization (d) water is essential for fertilization for their homosporous nature.

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