b. gymnosperm
c. gametophyte
d. monocot
2. Which of the following is an angiosperm?
a. yellow and red flower
b. fern branches
c. pine tree with pine cones
d. yellow moss
3. In ferns, the sporophyte produces ____.
a. cones, which grow into a gametophyte.
b. gametes, which grow into a gametophyte.
c. spores, which grow into a gametophyte.
d. seeds, which grow into a gametophyte.
4. Angiosperms and gymnosperms both produce
a. flowers
b. cones
c. spore
d. seeds
1. The right answer is gymnosperm.
The term gymnosperm comes from the Greek gumnospermos meaning "bare seed". It refers to plants that are part of a subphylum of spermaphytes, seed plants. The hallmark of gymnosperm plants is that their ovum is bare (not enclosed in an ovary unlike angiosperms) and receives pollen directly. It is carried by a fertile leaf or scales more or less open.
2. The right answer is A.
Angiosperms are plants whose reproductive organs are condensed into a flower and whose fertilized seeds are enclosed in a fruit, unlike gymnosperms whose seed is bare. Thus, angiosperms are commonly called "flowering plants".
3. The right answer is C
A fern designates a filicophyte, a pteridophytic plant vascularized without flower or seed, consisting of a rhizome producing aerial stems whose large fronds, equivalent to the leaves, bear sporangia on their underside.
By definition, a fern is a cryptogam belonging to a group of about 12,000 species of vascular plants that reproduce by spores and have no seeds or flowers.
4. The right answer is seeds.
Spermaphytes (which include gymnosperms, chlamydosperms, and angiosperms) are the first seed plants to appear on the surface of the globe. They are distinguished from other plants (bryophytes and pteridophytes), among others, by aerial reproduction via pollen.
Answer:
Mice are breeding machines. They have a gestating period of 19 to 21 days. A female mouse gets pregnant about 5 to 10 times each year and can give birth to a litter of 3 to 15 pups. On average, a female mouse atleast give birth to 35 to 56 pups. The mice reproduce each year, and the mother can mate immediately after giving birth.
actin
myosin
insulin
insulin would be your answer.
B) A meadow replacing a pond in its flood plain.
C) A climate gradually changing over many eons and becoming colder.
D) The replacement of a native species of animal with an invasive species.
Answer:
its b
Explanation: