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

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

1 Answer

Answer :

(d) Pinus – Dioecious
by

Related questions

Select the mismatch (1) Cycas – Dioecious (2) Salvinia – Heterosporous (3) Equisetum – Homosporous (4) Pinus – Dioecious

Description : Select the mismatch (1) Cycas – Dioecious (2) Salvinia – Heterosporous (3) Equisetum – Homosporous (4) Pinus – Dioecious

Last Answer : (4) Pinus – Dioecious

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.

Description : 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.

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

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

Which one of the following is heterosporous? (a) Adiantum (b) Equisetum (c) Dryopteris (d) Salvinia

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Last Answer : (d) Salvinia

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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Last Answer : (c) Selaginella Equisetum Salvinia Ginkgo

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Last Answer : (a) Three

.Consider the following four statements whether they are correct or wrong. A. The sporophyte in liverworts is more elaborate than that in mosses. B. Salvinia is heterosporous. C. The life-cycle in all seed-bearing plants is diplontic. D. In Pinus, male and female cones are borne on different trees. The two wrong statements together are (a) A and C (b) A and D (c) B and C (d) A and B

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Besides paddy fields, cyanobacteria are also found inside vegetative part of (a) Equisetum (b) Psilotum (c) Pinus (d) Cycas

Description : Besides paddy fields, cyanobacteria are also found inside vegetative part of (a) Equisetum (b) Psilotum (c) Pinus (d) Cycas

Last Answer : (d) Cycas.

Read the following five statements (A to E) and select the option with all correct statements. A. Mosses and lichens are the first organisms to colonise a bare rock. B. Selaginella is a homosporous pteridophyte. C. Coralloid roots in Cycas have VAM. D. Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic. E. In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte. (a) A, D and E (b) B, C and E (c) A, C and D (d) B, C and D

Description : Read the following five statements (A to E) and select the option with all correct statements. A. Mosses and lichens are the first organisms to colonise a bare rock. B. Selaginella is a homosporous pteridophyte. C. Coralloid roots in Cycas ... D and E (b) B, C and E (c) A, C and D (d) B, C and D

Last Answer : (a) A, D and E

Difference between homosporous and heterosporous pteridophytes -Biology

Description : Difference between homosporous and heterosporous pteridophytes -Biology

Last Answer : answer:

Distinguish between homosporous and heterosporous condition in pteridophytes.

Description : Distinguish between homosporous and heterosporous condition in pteridophytes. 

Last Answer : Ans: Majority of pteridophytes are homosporous.All spores produced od similar type. Example: Psilotum Heterosporous pteridophytes produce macro and microspores. Example: Selaginella. 

Strobili cones are found in (a) Salvinia (b) Pteris (c) Marchantia (d) Equisetum.

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Last Answer : (d) Equisetum.

Consider the following statements: Marchantia polymorpha (1) Is dioecious (2) Possesses antheridiophores and archegoniophores (3) Lacks foot and seta in its sporophyte (4) Is heterosporous

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Last Answer : Ans. ((b))

Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and apical meristem (c) Absence of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia

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Last Answer : (d) Presence of vessel elements and absence of archegonia

Give the economic importance of Cycas and Pinus.

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Last Answer : Give the economic importance of Cycas and Pinus.

Cross between hybrid and recessive parent is: (a) Back cross (b) Test cross (c) Monohybrid cross (d) Dihybrid cross Ans. (b) ................................................-----------------------------------------.................................................. PMT COACHING CLASSES (Zoology+Botany) – PMT, AIIMS, MBBS,lucknow 1. Largest egg of plant kingdom belongs to: (a) Cycas (b) Pinus (c) Psidium (d) Mangfera

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Number of cotyledons in Zea mays, Cycas and Pinus respectively are: (a) 1, 2, 4 (b) 1, 2, many (c) 2, 2, many (d) 2, 1, 4

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Last Answer : Ans. ((b))

Classify the following into gymnosperms and angiosperms. Wheat, pinus, bean, Cycas

Description : Classify the following into gymnosperms and angiosperms. Wheat, pinus, bean, Cycas

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Winged pollen grains are present in (a) mustard (b) Cycas (c) mango (d) Pinus

Description : Winged pollen grains are present in (a) mustard (b) Cycas (c) mango (d) Pinus

Last Answer : (d) Pinus.

Which one of the following plants is monoecious? (a) Pinus (b) Cycas (c) Papaya (d) Marchantia

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Last Answer : (a) Pinus

Which one of the following is monoecious? (a) Marchantia (b) Cycas (c) Pinus (d) Date palm

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Water containing cavities in vascular bundles are found in (a) sunflower (b) maize (c) Cycas (d) Pinus.

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Last Answer : (b) maize

Largest sperms in the plants world are found in (a) Banyan (b) Cycas (c) Thuja (d) Pinus.

Description : Largest sperms in the plants world are found in (a) Banyan (b) Cycas (c) Thuja (d) Pinus.

Last Answer : (b) Cycas

.Which one pair of examples will correctly represent the grouping spermatophyta according to one of the schemes of classifying plants? (a) Acacia, sugarcane (b) Pinus, Cycas (c) Rhizopus, Triticum (d) Ginkgo, Pisum

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.In Pinus/Cycas/gymnosperms, the endosperm is (a) triploid (b) haploid (c) diploid (d) tetraploid.

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Last Answer : (b) haploid

Resin and turpentine are obtained from (a) Cycas (b) Pinus (c) Cedrus (d) Abies.

Description : Resin and turpentine are obtained from (a) Cycas (b) Pinus (c) Cedrus (d) Abies.

Last Answer : (b) Pinus

Transfusion tissue is present in the leaves of (a) Pinus (b) Dryopteris (c) Cycas (d) both (a) and (c).

Description : Transfusion tissue is present in the leaves of (a) Pinus (b) Dryopteris (c) Cycas (d) both (a) and (c).

Last Answer : (d) both (a) and (c).

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

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Winged pollen grains are present in (1) Mustard (2) Cycas (3) Mango (4) Pinus

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Select the mismatch. (a) Rhodospirillum – Mycorrhiza (b) Anabaena – Nitrogen fixer (c) Rhizobium – Alfalfa (d) Frankia – Alnus

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Select the mismatch. (a) Gas vacuoles – Green bacteria (b) Large central vacuoles – Animal cells (c) Protists – Eukaryotes (d) Methanogens – Prokaryotes

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Last Answer : (b) Large central vacuoles – Animal cells

Select the mismatch : (1) Rhodospirillum - Mycorrhiza (2) Anabaena - Nitrogen fixer (3) Rhizobium - Alfalfa (4) Frankia - Alnus

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Which of the following pairs are correctly matched? (1) Fertile spike —Ophioglossum (2) Sporangiophore—Equisetum (3) Synangium—Psilotum (4) Apophysis—Spirogyra

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Last Answer : Ans. ((a))

Ectophloic siphonostele is found in (a) Osmunda and Equisetum (b) Marsilea and Botrychium (c) Adiantum and Cucurbitaceae (d) Dicksonia and Maiden hair fern

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Last Answer : (a) Osmunda and Equisetum

Which one of the following is a vascular cryptogam? (a) Ginkgo (b) Marchantia (c) Cedrus (d) Equisetum

Description : Which one of the following is a vascular cryptogam? (a) Ginkgo (b) Marchantia (c) Cedrus (d) Equisetum

Last Answer : (d) Equisetum

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Description : Read the following five statements (A - E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C ... . How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One

Last Answer : (d) One

Examples of homosporous pteridophytes. -Biology

Description : Examples of homosporous pteridophytes. -Biology

Last Answer : answer:

$ Rhizoids of female gametophyte of selaginella are multicellular. ! Selaginella is homosporous.

Description : $ Rhizoids of female gametophyte of selaginella are multicellular. ! Selaginella is homosporous.

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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.

Description : 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.

Last Answer : (b) the sperms can easily reach upto egg in the archegonium

Examples of heterosporous pteridophytes -Biology

Description : Examples of heterosporous pteridophytes -Biology

Last Answer : answer:

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

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

Last Answer : (a) heterosporous nature

Why the sporophyte of gymnosperm is heterosporous?

Description : Why the sporophyte of gymnosperm is heterosporous?  

Last Answer : Ans: Sporophyte produces two types of spores like smaller micro spores and larger mega spores so it is heterosporous.  

Are flatworms monoecious or dioecious?

Description : Are flatworms monoecious or dioecious?

Last Answer : There are monoecious hermaphrodite flatworms, like planarias and taenias, and there are dioecious (having male and female individuals) species too, like schistosomes.

How is sex determined in dioecious plants?

Description : How is sex determined in dioecious plants?

Last Answer : Dioecious: Having male and female reproductive organs in separate plants or animals. More than 90 per cent of flowering plants produce perfect flowers that have both male and female ... and developed individuals secrete the pheromone so as to masculinise the surrounding juvenile plants.

Maize belongs to the category : (A)Bisexual (B) Monoecious (C) Dioecious (D) None of these

Description : Maize belongs to the category : (A)Bisexual (B) Monoecious (C) Dioecious (D) None of these

Last Answer : (B) Monoecious

The plants with male and female flowers on different plants are called (A)Dicot (B) Dichogamy (C) Dicliny (D) Dioecious

Description : The plants with male and female flowers on different plants are called (A)Dicot (B) Dichogamy (C) Dicliny (D) Dioecious

Last Answer : (D) Dioecious

A good example of dioecious plant is a. Apricot b. Pear c. Plum d. Papaya

Description : A good example of dioecious plant is a. Apricot b. Pear c. Plum d. Papaya

Last Answer : Papaya

Dioecious, monocot fruit tree is: a. Banana b. Pomegranate c. Date palm d. Papaya

Description : Dioecious, monocot fruit tree is: a. Banana b. Pomegranate c. Date palm d. Papaya

Last Answer : Date palm

Which of the following vegetable has a dioecious behaviour: a. Onion b. Cabbage c. Bitter gourd d. Spinach

Description : Which of the following vegetable has a dioecious behaviour: a. Onion b. Cabbage c. Bitter gourd d. Spinach

Last Answer : Bitter gourd