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Bio Ch 38

Angiosperm Reproduction

The products of meiosis in plants are always which of the following? spores
Which of the following is the correct sequence during alternation of generations in a flowering plant? sporophyte-meiosis-gametophyte-gametes-fertilization-diploid zygote
Which of the following is true in plants? Meiosis occurs in sporophytes to produce spore
All of the following are features of angiosperms except: a small (reduced) sporophyte
Based on studies of plant evolution, which flower is not a modified leaf? receptacle
All of the following floral parts are directly involved in pollination except the: sepal
Floral parts would have the greatest impact on pollination? Sepal or Petal
A mutation in which of the following floral parts would have the greatest potential impact on fertilization? Stamen or carpel
Which of the following is the correct order of floral organs from the outside to the inside of a complete flower? sepals, petals, stamens, carpels.
All of the following are primary functions of flowers except: photosynthesis
Meiosis occurs within all of the following flower parts except the... style
A perfect flower is fertile but may be either complete or incomplete. Which of the following correctly describes a perfect flower? It has both stamen and carpels.
Carpellate flowers.. develop into fruits
which of the following types of plants is not able to self-pollinate? dioecious.
In flowering plants, pollen is released from the ... anther
In the life cycle of an agiosperm, which of the following stages is diploid.. microsporocyte
Where does meiosis occur in flowering plants? megasporocyte and microsporocyte
Which of the following is a correct sequence of processes that takes place when a flowering plant reproduces? meiosis, pollination, nuclear fusion, formation of embryo and endosperm
Which of these is incorrectly paired with its life-cycle generation? anther- gametophyte
Which of the following is the correct sequence of events in a pollen sac? microsporocyte-meiosis-microspores-mitosis-two haploid cells per pollen grain
Which of the following occurs in an angiosperm ovule? A megaspore mother cell undergoes meiosis.
Where and by which process are sperm produced in plants? Mitosis in male gametophytes
In which of the following pairs are the two terms equivalent? embryo sac -- female gametophyte
Which of the following is the male gametophyte of a flowering plant? pollen grain
In flowering plants, a mature male gametophyte contains... two sperm nuclei and one tube cell nucleus.
Within the female gametophyte, three mitotic divisions of the megaspore produce.. three antipodal cells, two polar nuclei, one egg, and two synergids
The largest cell(s) of the typical angiosperm embryo sac is (are) the.. central cell
Which cells, after fertilization, give rise to the embryo plant? egg cell
Which cells becomes the triploid endosperm? polar nuclei
Which cells guide the pollen tube to the egg cell tube cell
What is the relationship between pollination and fertilization in plants? Pollination brings gametophytes together so that fertilization can occur
Recent research has shown that pollination requires that carpels recognize pollen gains as "self or non self". For self-incompatibility, the system requires the rejection of self cells
As flowers develop, which transition does not occur? The tube nucleus becomes a sperm nucleus.
The integuments of an ovule function to do what? form a seed coat
A fruit includes one or more seeds and has fleshy cells rich in sugars.
What is typically the result of double fertilization in angiosperms? Both a diploid embryo and a triploid endosperm are formed.
Which of the following statements regarding the endosperm is false? It develops from the fertilized egg.
In angiosperms, products of the terminal cell become the: proembryo and the coteyledons
Which of the following statements is correct about the basal cell in a zygote? It forms the suspensor that anchors the embryo.
What is the embryonic root called? radicle
Which of the following "vegetables" is botanically a fruit? green beans
Which of these structures is unique to the seed of a monocot? coleoptile
Which of the following statements about fruits is false? Fruits form from microsporangia and integuments
Fruits develop from ovaries
The first step in germination of a seed is usually imbibition of water
When seeds germinate the radicle emerges before the shoot. This allows the seedling to quickly... obtain a dependable water supply
Which of the following is not true of the hypocotyl hook? It is the first structure to emerge from a eudicot seed.
In plants, which of the following could be an advantage of sexual reproduction as opposed to asexual reproduction? genetic variation
Which of the following is true about vegetative reproduction? It produces clones.
Which of the following is a true statement about clonal reproduction in plants? Making cuttings of ornamental plans is a form of fragmentation.
All of the following could be considered advantages of asexual reproduction in plants except.. adaptation of change.
Which of the following statements is true of protoplast fusion? It can be used to form new plant varieties by combining genomes from two plants.
Which of the following statements is correct about protoplast fusion? It can be used to form new plant species.
The most immediate potential benefits of introducing genetically modified crops include.. increasing crop yield.
Which of the following is not a scientific concern relating to creating genetically modified crops? The monetary costs of growing genetically modified plants are significantly greater than traditional breeding techniques.
Currently available transgenic plants have been modified for all of the following traits except.. nitrogen fixation.
Flowers are made of modified.. leaves
Which of these is unique to the flowering plants? double fertilization.
What is endosperm? a food-storing tissue of the seed
________ is the first event in seed formation pollination.
Which of the following statements is true about transgenic plants? They contain genes from more than one species.
Created by: kccroy