Which of the Following Does Not Have Exosporal Gametophyte Development

E Spores are produced in the sporangium. The plant body is a leafy gametophyte which has multicellular and branched rhizoids.

Biol 201 Final Flashcards Quizlet

Pinaceae Pinus has well developed gametophyte in which sperm cells are fertilised with egg cell within the ovule.

. Largest gametophyte occurs in mosses. It is the predominant stage of the life cycle of a moss. In the moss life cycle which of the following is NOT correct.

Therefore they have independent free-living gametophyteIn this respect Pteridophyte are similar to bryophytes ie they still have. Gametophyte is also photosynthetic and not dependent on sporophyte for nutrition These autotrophs are. Additionally mature pollen grains of both genes were reduced in size.

A stamen consists of a filament and an anther in which microspores are produced which give rise to pollen grains. The gametophyte are fetilized outside the body. Which does not apply to gymnosperms or angiosperms.

The largest most species of gymnosperms. The non-reproductive cells of the female gametophyte. While considering gametophyte versus sporophyte generations there are some stark points such as sporophyte is a diploid phase whereas gametophyte is a haploid generation.

Ameiosis bspore cmature gametophyte dantheridium e. The inner layer does not thicken during exospore development and a dense basal layer is formed by the lamellae. Egg and sperm are produced.

In seedless vascular plants such as ferns the gametophyte and sporophyte generations are both capable of photosynthesis and are independent. D Fertilization occurs on the archegonium. Which of the following is NOT a distinguishing characteristic of leptosporangiate ferns.

Bryophytes are nonvascular terrestrial plants of moist habitats in which a multicellular diploid sporophyte lives as a parasite on an independent multicellular haploid gametophyte that develops multicellular jacketed sex organs. Gametophyte is phase of life cycle in which the gametes ie. C The gametophyte is diploid.

The first cell in a sporophyte generation is the diploid zygote while the first cell in the. 1 Some cells of the diploid sporophyte undergo meiosis to produces haploid spores. Development of the gametophyte outside of the spore wall.

Biology Assignment Help Explain gametophyte In these autotrophs sporophyte is the dominant generation. Which of the following is a land plant that produces flagellated sperm and has gametophyte-dominated life cycle. Anthoceros is an example of a.

Biology questions and answers. So it has largest gametophyte. 1st sperm fertilizes the egg and 2nd sperm combines with 2 nuclei in the center cell of the female gametophyte and initiates development of endosperm.

Hence pinus is the correct option. Both phases are inde-pendent. Shows dominant gametophyte sporophyte semi-parasitic on parent gameto-phyte.

In contrast the outer layer increases significantly in thickness due to self-assembly Hemsley et al. Correct option is B Gametophyte is the male part of the plant. Sporangial development is intermediate between true eusporangiate and true leptosporangiate development.

Type 1 mutant plants exhibit pollen grains that display a highly collapsed exine structure in which the tecta disappear and the baculae deform into globular protrusions. I II III and made the following observations. The female gametophyte in angiosperms consists of haploid cells in which a few archegonia develop.

Which of the following is NOT true of gametophytes. The gametophyte is much larger than the sporophyte in all of the following except A. The correct option is.

The gametophye in non-vascular plants is the green moss-like vegetation at the base of the plant. Whereas in pteridophytes the main plant body is a sporophyte which is differentiated. A The male gametophyte produces the antheridia.

Sporangia are not grouped in a sorus lack an annulus and open in a longitudinal line. The gametophyte structure of ferns is a heart-shaped plant called a prothallium. The inner and outer layers consist of lamellae and poorly segregated components respectively.

Gametophyte is phase of life cycle in which the gametes ie. In bryophytes Funaria and Marchantia fertilisation is dependent on water for the transfer of sperm to the egg. They are a stage in the life cycle of plants.

4 Sperm and egg combine in fertilization to produce a diploid zygote. Mammals are adapted to live in the following environments. It is the dominant form in bryophytes.

One of the alkaloids that occur naturally in opium. They are haploid plants. In bryophytes Funaria and Marchantia fertilisation is dependent on water for the transfer of sperm to the egg.

During the final stages of. A worker who does not pay for the meals provided by an employer is receiving. Some species have separate fertile fronds whereas others have fronds that are.

The KNS1 and KNS11 genes constitute the type 1 genes as described and classified by Suzuki et al. Egg and sperm are produced. Land air and waterThe answer is all of the above.

B The female gametophyte produces the archegonia. In the life cycle of plants with alternating generations the gamete-producing and usually haploid phase producing the zygote from which the sporophyte arises. 2 Spores undergo mitosis to produce a multicellular haploid gametophyte.

The generalized pattern can be represented as in the following diagram. They are the result of sexual reproduction. Shows reduced gametophyte dominant sporophyte.

A modified leaf or leaf-like organ that bears microsporangia. Out of given options only Polytrichum is a moss. A Median longitudinal section of a mature foot embedded in the gametophyte showing placenta Pl palisade-like layer parenchyma region Pr and portion of the basal meristem B.

A fruit of an embryo nutritive material and a protective coat. A gymnosperm seed is composed of tissue belonging to. Which of the following has exosporal gametophyte development.

3 One or more cells of the gametophyte undergo mitosis to produce haploid sperm or egg. Sporophyte stage is asexual while gametophyte stage is sexual. Afreen studied the life cycles of 3 dierent plants.

Their gametes are either male or female. Which of the following is the nutritive tissue food supply for the embryo in a pine seed.

Alternation Of Generations Haploid Gametophyte Diploid Sporophyte Occurs After Fertilization Alternation Of Generations Plant Life Cycle Life Science

What Is A Spike A Spike Has Sessile Flowers Borne On A Single Rachis It Is A Raceme But Flowers Develop Di Life Cycle Stages Plant Study Types Of Orchids

Lms Of Phaeomegaceros Fimbriatus Showing Sporophyte Anatomy A Median Download Scientific Diagram

Geometric Tattoo Geometric Tattoos