Figure 6: Overview of Pine lifecycle Q. Label in the above given image the following structures: sporophyte, gametophytes, pollen and ovule male cone, female cone. 2. 3. 5. 6.
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A: A. seeds are correct answer.
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- Figure 23.28 Which of the following statements about the Laminaria life cycle is false? In zoospores form in the sporangia. The sporophyte is the 2n plant. The gametophyte is diploid. Both the gametophyte and sporophyte stages are multicellular.Below is a series of pictures of a gymnosperm needle (x.s.), Pinus monticola. 40x (x.s.) Make a sketch of the 40x leaf cross section and upload it here with the following structures labeled: epidermal cuticle, hypodermis, resin ducts, endodermis, vascular bundle, xylem and phloem, mesophyll, sunken stomataBelow is a series of pictures of the stem (x.s.) of a pine tree, Pinus sp. 40x (x.s.) Make a sketch of 40x and upload it here with the following structures labeled: periderm, cortex, secondary phloem, secondary xylem, vascular cambium, tracheids, resin ducts, Spring wood, Summer wood
- Below is a series of pictures of the stem (x.s.) of a pine tree, Pinus sp.. 40x (x.s.) Make a sketch of 40x and upload it here with the following structures labeled: periderm, cortex, secondary phloem, secondary xylem, vascular cambium, tracheids, resin ducts, Spring wood, Summer wood MacBook ProBelow is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. young 100x (x.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchymaBelow is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. E- young 100x (x.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchyma
- Below is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. young 100x (.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchymaa. Choose four (4) characteristics best describe an Equisetum Wide and flattened achlorophyllous leaves Commonly found in damp and marsh environment Deep root system with rhizomes that produce many terrestrial stems. Photosynthetic stem Heterosporous, whereas microspore produce male and megaspore produce female gametes Strictly reproduce sexually Shoots are two types, fertile and sterile b. Which of the following is not the main characteristics of Liverworts. Choose 3 The columella is absent in the capsule Pseudolaters are present in the capsule gametophyte plant is either thalloid or foliose dehiscence of the capsule takes place by separation of the lid each cell has one chloroplast with a pyrenoid c. Polypodium polypodioides is a type of fern that can withstand extreme dehydration by curling its fronds and shriveling its leaves. Once it is in contact with water, this plant will resurrect. Choose two…a. Choose four (4) characteristics best describe an Equisetum Wide and flattened achlorophyllous leaves Commonly found in damp and marsh environment Deep root system with rhizomes that produce many terrestrial stems. Photosynthetic stem Heterosporous, whereas microspore produce male and megaspore produce female gametes Strictly reproduce sexually Shoots are two types, fertile and sterile
- 9. Label the sporangia, indusium, leaf, and spores in Figure 4 below. 01 Figure 4. Cyrtomium leaf c.s., sorus l.s. 10. Explain the mechanism of spore dispersal in ferns with sori 11. In what way is this mechanical method of spore dispersal similar to that in the bryophytes? Photo by Carolyn Alling Most ferns produce only one kind of spore and are therefore homosporous. Upon germination, the spore, the first cell of the gametophytic generation, gives rise to a heart shaped, bisexual gametophyte, called a prothallus. 12. What type of nuclear division produces the many celled gametophyte from a spore? Examine the fern gametophytes under the dissecting scope. Note the many rhizoids emerging from the lower, or ventral, surface. Among the rhizoids you will find antheridia, some of which may contain sperm cells. Nearer the notch of the "heart" you will find the archegonia. In order to visualize their shape in three dimensions, you will have to focus up and down on the archegonia. Examine the…The male gametophyte of the moss looks identical to the female from the naked eye, but the photo below (I.s. at 4x and then at 40 x) shows that the tip contains the structures where male gametes are produced.Figure 1: Fern prothallus (https://en.wikipedia.org/wiki/File:Fern young sporophyte WM 2.jpg) 9) Label the following structures on Figure 1: • prothallus (gametophyte) sporophyte