Biology 211- Exam 4 Questions And Answers | Updated Solutions | 100% Correct Answe

__ inhabit aquatic ecosystems and wet terrestrial habitats, and have cells organized into tissues, lowlying growth forms without xylem and phloem, and rhizoids for absorbing nutrients and water. a) Green algae b) Seedless vascular plants c) Gymnosperms d) Nonvascular plants (e.g., mosses) - d) Nonvascular plants (e.g., mosses) _______ of life span and size) by a diploid (2n) sporophyte. The sporophyte produces a flower containing haploid (n) pollen and eggs. Fertilization of the egg (to produce a diploid zygote) can occur if a pollen grain is transported from a stamen to a carpel by a pollinator. Through mitosis, the zygote develops into a seed surrounded by fruit. Which lineage does this plant belong to? a) Gymnosperms b) Angiosperms c) Nonvascular plants (e.g., mosses) d) Green algae - b) Angiosperms __________ conducts carbohydrates from photosynthetic cells to roots - Phloem __________ conducts water and nutrients from roots to photosynthetic cells - Xylem __________________ is further increased when gametes from different parents (which likely have different combinations of alleles) fuse during fertilization - Genetic diversity • By producing individuals with different combinations of alleles for different genes, ________ increases the likelihood that some individuals will reproduce successfully under current and future environmental conditions - Meiosis• Homologous chromosomes (autosomes) may have different _______ - alleles A germ cell of a diploid organism has the genotype Aa for a particular trait. If that cell undergoes meiosis, what would the genotype be for this trait in resulting gametes? a) A in all gametes b) a in all gametes c) Aa in all gametes d) A in 50% of gametes, a in 50% of gametes - d) A in 50% of gametes, a in 50% of gametes A population of viruses with similar characteristics is called a _____. a) type b) genome c) sense d) strain e) species - d) strain A sexually reproducing animal has two unlinked genes, one for head shape (H) and one for tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete from this organism? a) tt b) Hh c) T d) HT e) HhTt - d) HT A stoma consists of a _____.a) gap where primary and secondary cell walls are missing b) pore surrounded by specialized guard cells c) water-conducting cell with vessel elements d) waxy substance found on the surface of a plant - b) pore surrounded by specialized guard cells According to scientific evidence, what is the order in which plant lineages (taxonomic groups) originated? In the correct answer, the first lineage listed was the first to emerge (in an evolutionary sense), and the last lineage listed emerged most recently. a) Seedless vascular plants (e.g., ferns), green algae, seed plants (i.e., gymnosperms, angiosperms), nonvascular plants (e.g., mosses) b) Seed plants, seedless vascular plants, green algae, nonvascular plants c) Green algae, nonvascular plants, seedless vascular plants, seed plants d) Green algae, seed plants, nonvascular plants, seedless vascular plants - c) Green algae, nonvascular plants, seedless vascular plants, seed plants All plant groups contribute to increased biodiversity by providing resources: a)______, b) _______, and c) _____ - a) food to consumers b) oxygen and c) habitat An advantage of asexual reproduction is that it _____. a) enables the species to rapidly colonize habitats that are favorable to that species b) allows a species to easily rid itself of harmful mutations c) enhances genetic variability in the species d) allows the species to endure long periods of unstable environmental conditions e) produces offspring that respond effectively to new pathogens - a) enables the species to rapidly colonize habitats that are favorable to that speciesAngiosperms are the most successful terrestrial plants. Which of the following features is unique to them and helps account for their success? a) dominant gametophytes b) fruits enclosing seeds c) embryos enclosed within seed coats d) sperm cells without flagella e) wind pollination - b) fruits enclosing seeds