Biology, 01.11.2019 10:31 Gladistshiala267
Which of the following best describes the male and female reproductive structures of an angiosperm? a) angiosperms produce flowers, inside which the male stamens hold the pollen and the female pistil holds the ovule.
b) angiosperms produce male and female cones, and the pollen from a male cone fertilizes the egg inside a female cone.
c) angiosperms produce male and female gametophytes, and the male gametophyte produces spores that fertilize eggs inside the female gametophyte.
d) angiosperms produce sporangia, which release spores that develop into male flowers containing pollen and female flowers containing ovules.
Answers: 2
Biology, 22.06.2019 00:00
How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000
Answers: 1
Biology, 22.06.2019 12:10
Recombinant dna is the merging of dna from unrelated organisms to create new genetic varieties is assembled in the lab from mononucleotides was part of the green revolution of the 1960s is pollination of one plant by another of the same species is cross-pollination of one plant by a different species
Answers: 1
Biology, 22.06.2019 13:00
Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?
Answers: 1
Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Which of the following best describes the male and female reproductive structures of an angiosperm?...
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