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?
What is its primary function of the structure? Stores nutrients and waste products. 14. What part of the plant cell gives it is green color? Chloroplast gives it the green color 15.
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.
bb x bb e. BB x bb 29. To determine whether an unknown black guinea pig is pure or hybrid black, it should be crossed with a. a white b. a hybrid black c. a hybrid white d. a pure black e. another unknown 30. Organisms that have two identical alleles for a particular trait are said to be a. hybrid b. homozygous c. heterozygous d. dominant 31. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds?
Onion, Cheek, and Elodea Lab 1. What are the two types of cell we discussed? How would you classify onion, cheek, and Elodea cells? ans: The two types of cells we discussed is the plant cells, and animal cell. Onion, Cheek, and Elodea cells are all eukaryotic.
AP Bio 1982: Brendan Ramos In the life cycle of a fern and a flowering plant, compare and contrast each of the following: A. The gametophyte generation B. Sperm transport and fertilization C. Embryo protection A. Small multicellular male and female gametophytes are produced within the flower of the sporophyte in flowering plants. 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.
If a red rose is crossed with a pink rose, what percentage of the offspring will be pink? Question 10 options: 100 75 50 25 Question 11 One of the products of cellular respiration is ________. Question 11 options: water sucrose cellulose oxygen Question 12 An ecologist is studying all the animals, plants, fungi and bacteria, as well as the interaction among them, in a forest? He is studying the _________ in the forest. Question 12 options: niche biome community population Question 13 The temperature optimum for an enzyme is 37C.
a) Bb x Bb c) BB x BB b) BB x bb d) Bb x bb 5) When a certain pure strain of fruit fly is cultured at a temperature of 16˚C, all of the flies will develop straight wings. The offspring of these flies will develop curly wings when they are raised at 25˚C. This pattern of development indicates that a) acquired characteristics can be passed from generation to generation b) curly-winged flies will have straight- winged offspring regardless of the environment c) the environment can affect the expression of certain genes d) straight-winged flies will have curly- winged offspring regardless of the environment The changes in foot structure in a bird population on over many generations are shown in the diagram below. 6) These changes can best be explained by the concept of a) evolution b) extinction c) stable gene frequencies d) use and disuse 7) In 1889, August Weismann, a German biologist, conducted an experiment attempting to produce mice without tails. He cut the tails off adult mice and then permitted them to mate.
INDEX * 1 Statistical Analysis * Working with data * 2 Cell Theory * Cell theory * Prokaryotic cells * Eukaryotic cells * Membranes * Cell division * 3 The Chemistry of Life * Chemical elements & H2O * Carbs, lipids & proteins * DNA structure * DNA replication * Transcript & Translation * Enzymes * Cell respiration * Photosynthesis * 4 Genetics * Chromosomes, genes... * Meiosis * Theoretical genetics * Genetic engineering * 5 Ecology and Evolution * Communities & ecosystems * The greenhouse effect * Populations * Evolution
Christian describes life as “a new form of complexity” (xxiv). How did oxygen and photosynthesis cause life to begin on Earth? 3. Eventually, multi-celled organisms emerged from water, to land, and eventually (about 7 million years ago) into human ancestors. What were some stages in the development to our species, homo sapiens?