The ovules in gymnosperms are.... a)ategmic b)unitegmic c)bitegmic d)(b)or(c)

The ovules in gymnosperms are....
a)ategmic b)unitegmic c)bitegmic d)(b)or(c)
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1 Answer

Answer :

d)(b)or(c)
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Related questions

The seeds of Pinus plant are a. Unitegmic b. Bitegmic c. Ategmic d. Abortive

Description : The seeds of Pinus plant are a. Unitegmic b. Bitegmic c. Ategmic d. Abortive

Last Answer : a. Unitegmic

The abortive female flower in the male cone of Gnetum can be distinguished from the normal ovules of the female cone apart from its function by the presence of …. a) no envelops b) single envelope c) two envelopes d) several envelops.

Description : The abortive female flower in the male cone of Gnetum can be distinguished from the normal ovules of the female cone apart from its function by the presence of …. a) no envelops b) single envelope c) two envelopes d) several envelops.

Last Answer : b) single envelope

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.

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

Description : 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

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

Double fertilization is found in: (a) Bryophytes (b) Angiosperms (c) Gymnosperms (d) Pteridophytes

Description : Double fertilization is found in: (a) Bryophytes (b) Angiosperms (c) Gymnosperms (d) Pteridophytes

Last Answer : Ans. ((b))

How do angiosperms differ from gymnosperms?

Description : How do angiosperms differ from gymnosperms?

Last Answer : First, the seeds of the angiosperms, a more recently evolved and highly successful division of the tracheophytes, are enclosed within a protective chamber, the ovary. A ripened ovary containing ... support. In conifers, the single xylem elements, the tracheids, represent a more primitive condition 

In gymnosperms pollination is affected by......... a) water b)wind c)animals d)insects.

Description : In gymnosperms pollination is affected by......... a) water b)wind c)animals d)insects.

Last Answer : b)wind

The tissue which attaches the ovules inside the ovary is

Description : The tissue which attaches the ovules inside the ovary is

Last Answer : The tissue which attaches the ovules inside the ovary is A. Funicle B. Hilum C. Placenta D. Chalaza

Consider the following statements about pollination. 1. Transfer of pollen grains from the anther to ovules in the same flower or a different f lower is called pollination. 2. The pollination by wind is called anemophily. 3. Pollination is a prerequisite for seed and fruit development in all flowering plants. 4. Seeds may develop in some water ferns without pollination. Which of the above statement/s is/are correct? (a) 1 and 3 (b) 1, 2 and 4 (c) Only 2 (d) 1, 2, 3 and 4

Description : Consider the following statements about pollination. 1. Transfer of pollen grains from the anther to ovules in the same flower or a different f lower is called pollination. 2. The pollination by wind is called anemophily. 3. Pollination is a ... 1 and 3 (b) 1, 2 and 4 (c) Only 2 (d) 1, 2, 3 and 4

Last Answer : Ans:(c)

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

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

Last Answer : (3) stigma Explanation: The stigma is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates. The style connects the stigma to the ovary.

Self fertility refers to the ability of a variety to produce fruits with viable ___: a. Pollens b. Seeds c. Ovules d. Ovaries

Description : Self fertility refers to the ability of a variety to produce fruits with viable ___: a. Pollens b. Seeds c. Ovules d. Ovaries

Last Answer : Seeds

Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect? (a) Ovules develop into embryo sac. (b) Ovary develops into fruit. (c) Zygote develops into embryo. (d) Central cell develops into endosperm

Description : Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect? (a) Ovules develop into embryo sac. (b) Ovary develops into fruit. (c) Zygote develops into embryo. (d) Central cell develops into endosperm

Last Answer : (a) Ovules develop into embryo sac.

Plants with ovaries having only one or a few ovules, are generally pollinated by (a) bees (b) butterflies (c) birds (d) wind.

Description : Plants with ovaries having only one or a few ovules, are generally pollinated by (a) bees (b) butterflies (c) birds (d) wind.

Last Answer : d) wind.

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.

Description : 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.

Last Answer : (d) parietal.

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

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

Last Answer : (c) ovules not enclosed in ovary

Conifers differ from grasses in the (a) formation of endosperm before fertilization (b) production of seeds from ovules (c) lack of xylem tracheids (d) absence of pollen tubes.

Description : Conifers differ from grasses in the (a) formation of endosperm before fertilization (b) production of seeds from ovules (c) lack of xylem tracheids (d) absence of pollen tubes.

Last Answer : (a) formation of endosperm before fertilization

Cycas has two cotyledons but not included in angiosperms because of (a) naked ovules (b) seems like monocot (c) circinate ptyxis (d) compound leaves.

Description : Cycas has two cotyledons but not included in angiosperms because of (a) naked ovules (b) seems like monocot (c) circinate ptyxis (d) compound leaves.

Last Answer : (a) naked ovules

Plants with ovaries having only one or a few ovules, are generally pollinated by:a) Birdsb) Windc) Beesd) Butterflies

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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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