Which of the following floral structures are present during the diploid stage of a flowering plant's life cycle?
A. Anther
B. Pollen grain
C. Ovule
D. Sporophyte
E. Everything except the pollen grain.
Answer: E
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Blastocyst cells that give rise to the embryo's body constitute the
A) blastomere. B) inner cell mass. C) outer cell mass. D) mesoderm.
An abundance of _____ in the atmosphere would have prevented the spontaneous assembly of organic compounds on early Earth
a. hydrogen b. methane c. oxygen d. nitrogen
Identify the form of male genital cutting, common among some tribes in central Australia, which involves a slit being made on the lower side of the penis along its entire length and to the depth of the urethra.
A. Supracision B. Supercision C. Subincision D. Superincision
Which of the following applies to organisms, particularly plants and fungi, that have distinct haploid and diploid phases of their life cycles?
A) polyploidy B) aneuploidy C) alternation of generations D) asexual propagation E) regeneration