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label the gymnosperm ovary . *please refer to the attached photo for the guide questions to correctly label the specimen.
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- Match the terms with the most suitable description. ____ ovule a. pollen tube together with its contents ____ receptacle b. consists of seven cells, one with two nuclei ____ double fertilization c. after fertilization, develops into a seed ____ anther d. embryonic shoot ____ plumule e. pollen sacs inside ____ mature female gametophyte f. swollen stem; base of flower ____ mature male gametophyte g. formation of zygote and first cell of endospermMatch the terms appropriately. _____ovule a. gamete-producing body _____cuticle b. spore-producing body _____gametophyte c. where eggs form _____sporophyte d underground stem _____fruit e. mature ovary _____endosperm f. nutritive tissue in seed _____rhizome g. where fern spores form _____sorus h. waxy layerMegasporocytes will eventually produce which of the following? pollen grain sporophytes male gametophytes female gametophytes
- Match the terms with the most suitable description. ____ ovule a. pollen tube together with its contents ____ receptacle b. consists of seven cells, one with two nuclei ____ double fertilization c. after fertilization, develops into a seed ____ anther d. embryonic shoot ____ plumule e. pollen sacs inside ____ mature female gametophyte f. swollen stem; base of flower ____ mature male gametophyte g. formation of zygote and first cell of endospermIn flowers, a _______ contains one or more ovaries. a. Pollen sac b. Carpel c. receptacle d. sepalMeiosis of cells in pollen sacs forms haploid _________. a. megaspores b. microspores c. stamens d. spomphytes
- TRUE OR FALSE 1.Gymnosperms reproduce diploid spores by way of mitosis. 2. Seed plants have one kind of spore and produces a bisexual gametophyte. 3. The transfer of pollen to the part of a seed plant that contains the ovules is called germination.8. Label the pollen sac and pollen grains in Figure 5. below. Figure 5. Lilium mature anther c.s. Photo by Carolyn Alling 9. How does the mature anther differ from the immature one with pollen tetrads?. Examine the pollen grains, or immature male gametophytes. Find a pollen grain with two nuclei. The pollen grain is not a binucleate cell, but rather a two-celled structure. The larger cell is the vegetative cell, or tube cell. The smaller cell, which floats freely in the cytoplasm of the tube cell, is the lens-shaped generative cell (see text Figure 19-16, page 468). If you look carefully, you will be able to distinguish the protoplast of the generative cell from that of the tube cell. 10. Find a pollen grain in Figure 6 below in which you can clearly see both the generative and tube cells and label them. Figure 6. Lilium mature anther c.s. 7 128 Photo by Carolyn AllingFill in the blanks in the following sentences. After pollinators bring. develops into a mature (pollen grains) to a flower, sperm and egg meet, forming a which produces by meiosis. O sporophytes; zygote; male gametophyte; spores O zygotes: sporophyte; spore; male gametophytes male gametophytes; zygote; sporophyte; spores O spores; sporophyte; zygote; male gametophytes This cell
- VOLTE1¹67 3:41fb. : +91 97532 46070 21 जुलाई, शाम 5:38 → Class XII 1. Draw a 2. Explain 7. Seed (B) Fruit Jawahar Navodaya labelled Subject: Biology laya Vidyalaya Buranabad ujjain -2 diagram of Embryo Insects. sac 2and microsporagium. Megasporogeneris. Pollen grains Embryo Development. by Pollination. 3. Draw a labelled diagram of female reproductory system. 4. List hormones of pregnancy and their role. 5. Project Report (Topic given) 6. Make a Chart / Model from any, subject or topic. from Chapter 2 and 3. on Do survey diffcunt pollinating Agent within your Economic valuu. ⇓ C. 4. O טMultiple choice 1. In a plant species that is homosporous, antheridia and archegonia are borne on? A. a single gametophyte B. separtate gametophytes C. single sporophyte D. separate sporophytes 2. Which of the following is correct in the angiosperm? A. A female gametophyte develops from the outer layer of the ovule while; the fruit develops from the outer wall of the ovary B. A pollen tube develops from the outer layer of the ovule while; a carpel develops from the outer wall of the ovary C. A seed coat develops from the outer layer of the ovule while; the fruit develops from the outer wall of the ovary D. A seed develops from the outer layer of the ovule while; an embryo develops from the outer wall of the ovary Fill in the blanks. 1. In the female gametophyte of the ovary, one egg is associated with the __________ which is located at the __________ end.In three sentences or less answer the following. Some angiosperms have separate male and female sporophytes i.e. a plant in the diploid phase can only produce male flowers, or female flowers, not both. Provide one selective advantage and one selective disadvantage for plants that exhibit this strategy.