Bio 182 Exam 2 Questions and Correct
Answers, 100% Correct. 2024/5.
An organelle found only in plants and photosynthetic protists that absorbs sunlight and uses it to drive
the synthesis of organic compounds from carbon dioxide and water.
Chloroplasts
What is a perennials (woody plant) cell wall composition
Primary: Cellulose
Secondary: lignin
Angiosperm double fertilization is so-called because it features the formation of
embryo involving one sperm cell (2n Zygote)
endosperm involving a second sperm cell. (3n)
"one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei"
Which of the following is an ongoing trend in the evolution of land plants?
Reduction of the gametophyte phase of the life cycle
A "perfect" flower is?
Bisexual
has both stamens and carpels
Leafs are specialized to _____________ and allow for____________ with the air around them.
take in light, gas exchange
C4 plants minimize photorespiration by
separating initial CO2 fixation and the Calvin cycle in space, performing these steps in different cell types
Whats different between Plants and Algae sperm?
Plants: Airborne spread of sperm
Algae: Water spread of sperm
What are 5 traits in all plants, not algae?
-Alternation of generations
-Multicellular, dependent embryos
-Walled spores
, -Multicelluar gametangia
-Apical Meristems
Which of the following is a trait unique to land plants?
Walled spores produced in sporangia
What is the Gametophyte generation?
haploid, produces gametes by mitosis
Fusion of a plant sperm and egg leads to?
Diploid sporophyte, undergo meiosis which produces haploid spores
What are sporangia?
multicellular organs that produce spores
Why are plants called embryophytes?
because of the dependency of the embryo is on the parent
What are gametangia? 2 types?
Organ produces gametes
Female gametangia = Archegonia
Male gametangia = Antheridia
Plants sustain continual growth in their
Apical meristems
Why does pinching off the top of a plant make it bushier?
Removing the apical meristem stimulates growth in the axillary buds, thus making the plant bushier.
Most of the photosynthesis in plants takes place in specialized __________ cells called the
__________.
parenchyma; mesophyll
In flowers, pollen is produced in the __________.
anther
What is the plant cuticle?
Waxy covering of epidermis, prevents water loss and microbial loss
What is the stomata? where are they located
Answers, 100% Correct. 2024/5.
An organelle found only in plants and photosynthetic protists that absorbs sunlight and uses it to drive
the synthesis of organic compounds from carbon dioxide and water.
Chloroplasts
What is a perennials (woody plant) cell wall composition
Primary: Cellulose
Secondary: lignin
Angiosperm double fertilization is so-called because it features the formation of
embryo involving one sperm cell (2n Zygote)
endosperm involving a second sperm cell. (3n)
"one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei"
Which of the following is an ongoing trend in the evolution of land plants?
Reduction of the gametophyte phase of the life cycle
A "perfect" flower is?
Bisexual
has both stamens and carpels
Leafs are specialized to _____________ and allow for____________ with the air around them.
take in light, gas exchange
C4 plants minimize photorespiration by
separating initial CO2 fixation and the Calvin cycle in space, performing these steps in different cell types
Whats different between Plants and Algae sperm?
Plants: Airborne spread of sperm
Algae: Water spread of sperm
What are 5 traits in all plants, not algae?
-Alternation of generations
-Multicellular, dependent embryos
-Walled spores
, -Multicelluar gametangia
-Apical Meristems
Which of the following is a trait unique to land plants?
Walled spores produced in sporangia
What is the Gametophyte generation?
haploid, produces gametes by mitosis
Fusion of a plant sperm and egg leads to?
Diploid sporophyte, undergo meiosis which produces haploid spores
What are sporangia?
multicellular organs that produce spores
Why are plants called embryophytes?
because of the dependency of the embryo is on the parent
What are gametangia? 2 types?
Organ produces gametes
Female gametangia = Archegonia
Male gametangia = Antheridia
Plants sustain continual growth in their
Apical meristems
Why does pinching off the top of a plant make it bushier?
Removing the apical meristem stimulates growth in the axillary buds, thus making the plant bushier.
Most of the photosynthesis in plants takes place in specialized __________ cells called the
__________.
parenchyma; mesophyll
In flowers, pollen is produced in the __________.
anther
What is the plant cuticle?
Waxy covering of epidermis, prevents water loss and microbial loss
What is the stomata? where are they located
