Choose the One Most Appropriate Answer for Each

question 60

Multiple Choice

Choose the one most appropriate answer for each.
-megaspore

• A)radially asymmetric flower
• B)an inflorescence of many flowers clustered on a single head, such as in a daisy
• C)develops into a fruit at maturity
• D)created from a triploid cell that is produced when one sperm cell fuses with the central cell
• E)male reproductive organ in angiosperms
• F)modified leaf with pigments and fragrance-producing cells
• G)immature male gametophyte
• H)female reproductive organ
• I)common name for a fused compound of multiple female reproductive organs
• J)contains pollen sacs
• K)forms in an ovule and gives rise to a female gametophyte
• L)outermost whorl of leaf parts on a receptacle; generally green, but sometimes pigmented
• M)region of carpel that receives pollen grains
• N)arrival of pollen on a receptive stigma
• O)forms a seed at maturity

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Definitions:

Programmed Theories

Theories suggesting that aging is the result of genetics and biological processes programmed into the body.

Cross-Linking

A chemical process that involves the linking of polymer chains by covalent bonds, often increasing the material's strength or stiffness.

Collagen

A protein found in the body's connective tissues, such as skin, tendons, and ligaments, essential for structural support and elasticity.

Stress Hormones

Hormones, such as cortisol and adrenaline, that are released into the body in response to stress, affecting various physiological processes.