GIVING , ⓉⒽⒶⓃⓀⓈ and 1. The spores on a fern are found:

in the fruit

in the roots

under the leaves

inside the flowers

2. Fern spores usually form during:

spring

winter

summer

fall

3. Why must the plant which grows directly from the fern spore be wet?

in order to produce a seed

so that the egg can be fertilized

so that it can grow

4. Spores are formed in:

ovaries

spore cases

anthers

5. Ferns grow by:

photosynthesis

reproduction

mitosis

6. How do spores help sustain the population of ferns?

Spores do not have any natural predators.
There are million of spores that are made by a single plant to help keep its population.

Spores can hide under rocks for long time before maturing into an adult plant.

Spores can live for a long time without maturing into an adult plant.

7. Choose all the right answers.

When the leaf of a fern touches the ground, it may produce a new plant:

by planting a spore

by vegetative reproduction

by growing roots at the point of contact

by budding from its stem

1: C. They are found contained in a casing, called sporangia, and grouped into bunches, called sori, on the underside of the leaves.

2: C. The sporophyte generally releases spores in the summer. Spores must land on a suitable surface, such as a moist protected area to germinate and grow into gametophytes.

3: B:  Moisture is needed for germination, growth and fertilization and high humidity for prothalli and young developing ferns after fertilization.

4: B. In ferns, spores are contained within cases called sporangia that are located on the underside of leaves.

5: C. Each spore grows into a photosynthetic prothallus (gametophyte) via mitosis. Because mitosis maintains the number of chromosomes, each cell in the prothallus is haploid.

6: D. the reason why that's the answer is because I read a national geographic paper and it said that spores can live for over a million years without maturing into an adult plant .

7: A and B. Walking fern also has another, asexual, way of reproducing. If the long extended leaf tip touches soil, a new plantlet can form at the tip, produce roots, and become a new plant. The new plant can then grow a long leaf which touches the ground and sprouts another plantlet. In this way the colony gets larger and larger.

I hope this helped, have a great day! :)

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.