A male sporangium 91) What is a stigma in a plant? The female part of the carpal that receives the pollen. 92) What part of the plant is the protective chamber where the eggs develop? 93) Pollen grains develop in the _____ and are trapped by the ______. Anther and stigma 94) What are the green leaves that enclose the flower before the flower opens?
"A Brief History of Sugar." A Brief History. 11 Oct 2008 <http://www.irish- sugar.ie/noframes/nf-pages/nf-hist/nf-hist.htm#productn> Sugar cane is a member of the grass family. The sugar cane has hollow stalks filled with a sweet juice or sap from which sugar can be extracted and can grow to 15 feet tall. It grows best in very warm climates and is ready to harvest after 10 to 20 months.
Biology Gynoecium: - The gynoecium (from Ancient Greek γυνή, gyne, meaning woman, and οἶκος, oikos, meaning house) is a term with several meanings in botanical usage. In reference to mosses, liverworts and hornworts,gynoecium refers to a cluster of archegonia and any associated modified leaves or stems present on agametophyte shoot. More commonly, gynoecium refers to the ovule-producing part of a flower. The gynoecium is typically the innermost whorl of structures in a flower and is surrounded (in perfect flowers) by the androecium (stamens) and (in complete flowers) by the perianth (petals and sepals). The gynoecium is often inaccurately [clarification needed] referred to as female because it gives rise to female (egg-producing) gametophytes.
We concluded that ammonium nitrate inhibits C. richardii spore germination. Introduction Ferns can be found almost anywhere in the world, making them a major part of our ecosystem. There are over 10,000 species of ferns and they predominantly inhabit tropical areas (Brooker et. al. 2014).
BIOQ121 - Foundations of Critical Enquiry Assignment B – Traditional Evidence Native Quinine Tree and its medicinal qualities and uses amongst North Western NSW Aborigines Name: Rebecca Smith SN: 238850 Australian Aborigines have been using native plants for both food and medicine for thousands of years. Their special relationship with the land includes an understanding of all animals and plants. This relationship is not only important for food and medicine but also their spiritual beliefs. According to Isaacs (2002, p.197) ‘Aboriginal herbal medicine has been gleaned by the best scientific technique of all – extensive trial and presumably error, and observations of the results, not on animals in test laboratories but on human patients
Basing our hypothesis off of this past experiment, I hypothesized that in the presence of ammonium nitrate we should see an increased germination rate of our spores from the Ceratopteris richardii. We grew 2 different cultures of the fern spores, one on a control petri dish and one in 1% NH4NO3, with 6 replicates. They were grown for 4 weeks and were put under sufficient lighting. All the data was compiled from all the replicates and after all the calculations we found that there was a significant difference in the spore germination rate. Less germinated in the presence of 1% ammonium nitrate compared to the spores not in the presence of ammonium nitrate.
|Hormones for growth, etc. | |Nutrition |Photosynthesis |Photosynthesis |Photosynthesis | |Reproduction |Spores – alternation of generations|Seeds; male & female cones; |Seeds – flowers – pollen - | | |1N to 2N |fertilization |fertilization
Color grey and hard.|It’s small. Very green and is a group of long leaves. |There are long and have a great height. There are abundant.|It has very yellow petals and in the middle a brown seed head| Why does this plant belong in this division?|Because the nonvascular plant do not have tissues to get nutrients.|the have a vascular system and a dominant sporophyte stage .|They produce pollen grains and ovules in cones.|They produce pollen grains and and ovules.| What adaptations does this plant have? (An adaptation is a behavior or body part that helps an organism survive.
The gameteophyte of a fern consists of a free-living distinct plant called the prothallus on which structures called archegonia and antheridia produce eggs and sperm respectively. Gametes are produced by both these gametophytes. A. GAMETOPHYTE GENERATION I. FERN * Haploid * Reduced in comparison to sporophyte * Characterized as a heart-shaped prothallus * Eggs formed in archegonia * Sperm formed in antheridia * Details of archegonial structure * Details of antheridial structure * Gametophyte is photosynthetic; has rhizoids for anchoring and water absorption II. FLOWERING PLANT * Male (micro)gametophyte (or pollen grain is immature microgametophyte) * Female (mega)gametophyte or embryo sac * Structure of microgametophyte normally two cells, a tube and a generative cell (sometimes identified as a tube cell and two sperm nuclei) * Structure of megagametophyte is 7 cells with 8 nuclei * Both gametophytes nutritionally dependent on the sporophyte * Haploid * Gametophyte develops usually from one type of spore in ferns (homospory), * While in the flowering plnats each gametophyte develops from a different type
Refer to figure ten, the white pine (Ps) was dominant 100 years ago rather then the hemlock (Ts) and black birch (Bl) which are dominant now. And the only two species in the understory were exclusively hemlock and beech (Fg), rather then having a more diverse population of species as we have now of beech, red oak (Qr), red maple (Ar), White pine, sugar maple (As), Yellow birch (Ba) and hophornbeam (Ov). The rest of the species were either not present or at very low quantities, such as the white ash (Fa) is now. 6. As discussed