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BIOL 1002 (Pomarico) Exam 2 Questions and Answers with
Complete Solutions UPDATED!!!
Alternation of generations - ANSWER A life cycle, typical of
plants, in which a diploid sporophytes (spore-producing)
generation alternates with a haploid gametophyte (gamete-
producing) generation
Sporophyte - ANSWER The multicellular diploid stage in the life
cycle of a plant; produces haploid, asexual spores through
mitosis. Dominant form of the life cycle.
Gametophytes - ANSWER The multicellular haploid stage in the
life cycle of plants
Multicellular Embryos - ANSWER Distinguishes plants from
other photosynthetic organisms
Chlorophyll - ANSWER Green pigment which plays a crucial role
in photosynthesis
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Diploid - ANSWER Cells which contain two complete sets (2n) of
chromosomes
Haploid - ANSWER Cells which contain only one complete set of
chromosomes (n)
Gametes - ANSWER Zoospores - Sperm (male) and eggs
(female)
Zygote - ANSWER Fertilized egg (diploid)
Embryo - ANSWER (Diploid) Developed from a Zygote which
matures into a sporophyte
Photosynthetic Protists - ANSWER Ancestors of plants
Stoneworts - ANSWER (green algae) plants closest living
relatives
(contain the same type of chlorophyll, store food as starch, and
have cell walls made of cellulose)
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Mitosis - ANSWER Division of a parent cell, producing 2 identical
daughter cells
Meiosis - ANSWER 2 divisions of a germ cell, producing 4 non-
identical gametes
Cuticle - ANSWER Covers the surfaces of leaves and stems and
limits the evaporation of water (waxy)
Stomata - ANSWER Pores in leaves and stems that open to allow
gas exchange but close when water is scare, reducing the
amount of water lost to evaporation
Lignin - ANSWER A stiffening substance which is a rigid polymer
that impregnates the conducting cells and supports the plant
body. Helping to expose maximum surface area to sunlight.
(most nonvascular plants lack this)
Nonvascular Plants - ANSWER Also known as bryophytes which
require moist environments to reproduce, thus straddle the
boundary between aquatic and terrestrial life. Lack conducting
structures.
BIOL 1002 (Pomarico) Exam 2 Questions and Answers with
Complete Solutions UPDATED!!!
Alternation of generations - ANSWER A life cycle, typical of
plants, in which a diploid sporophytes (spore-producing)
generation alternates with a haploid gametophyte (gamete-
producing) generation
Sporophyte - ANSWER The multicellular diploid stage in the life
cycle of a plant; produces haploid, asexual spores through
mitosis. Dominant form of the life cycle.
Gametophytes - ANSWER The multicellular haploid stage in the
life cycle of plants
Multicellular Embryos - ANSWER Distinguishes plants from
other photosynthetic organisms
Chlorophyll - ANSWER Green pigment which plays a crucial role
in photosynthesis
, Page |2
Diploid - ANSWER Cells which contain two complete sets (2n) of
chromosomes
Haploid - ANSWER Cells which contain only one complete set of
chromosomes (n)
Gametes - ANSWER Zoospores - Sperm (male) and eggs
(female)
Zygote - ANSWER Fertilized egg (diploid)
Embryo - ANSWER (Diploid) Developed from a Zygote which
matures into a sporophyte
Photosynthetic Protists - ANSWER Ancestors of plants
Stoneworts - ANSWER (green algae) plants closest living
relatives
(contain the same type of chlorophyll, store food as starch, and
have cell walls made of cellulose)
, Page |3
Mitosis - ANSWER Division of a parent cell, producing 2 identical
daughter cells
Meiosis - ANSWER 2 divisions of a germ cell, producing 4 non-
identical gametes
Cuticle - ANSWER Covers the surfaces of leaves and stems and
limits the evaporation of water (waxy)
Stomata - ANSWER Pores in leaves and stems that open to allow
gas exchange but close when water is scare, reducing the
amount of water lost to evaporation
Lignin - ANSWER A stiffening substance which is a rigid polymer
that impregnates the conducting cells and supports the plant
body. Helping to expose maximum surface area to sunlight.
(most nonvascular plants lack this)
Nonvascular Plants - ANSWER Also known as bryophytes which
require moist environments to reproduce, thus straddle the
boundary between aquatic and terrestrial life. Lack conducting
structures.
