evolution of a plant

Question 1

what 3 things does the life of a plant depend on?

Answer 1

1. sun, 2. O and CO2, 3. minerals/ water

Question 2

what plant are other plants suppose to have originated from?

Answer 2

green algae (plants originated from single celled organisms that lived in water)

Question 3

Did the original plants have leaves and roots?

Answer 3

nope

Question 4

So why did they come to form?

Answer 4

the demands on organisms for water caused them to evolve with roots, stems, and leaves needed to retrieve water.

Question 5

Name 4 characteristics of plants?

Answer 5

1. multicellular, 2. eukaryotes, 3. have cell walls made of CELLULOSE, 4. autotrophs via photosynthesis using chorophyll.

Question 6

What 5 groups do botanists categorize plants into?

Answer 6

1. flowering plants, 2. green algae, 3. mosses, 4. ferns, 5. conifers

Question 7

After the creation of the green algae, what type of plant evolved next?

Answer 7

embryo forming plants like moss (aka “land plant”). After that came water conducting tissues (such as leaves and roots). Flowering plants came last.

Question 8

What 4 plant structures evolved to allow for the embryos to survive?

Answer 8

1. leaves (which collect water for the embryo), 2. seeds/cones (which protect the embryo and provide it with nutrients), 3. fruit ( which encloses the embryo and provides it with food), 4. flowering ( creates reproductive advantages)

Question 9

What advantage did fruit give to a plant’s survival?

Answer 9

it enclosed the embryo and provided it with nutrients

Question 10

What advantages did cones provide for the survival of plants?

Answer 10

protects the embryo through droughts, cold weather, and harsh conditions

Question 11

What sets the plants sex life apart from any other living organism?

Answer 11

They often have two types of reproduction going on in different parts of their body: roots may be going through a HAPLOID (N) phase and the rest of the plant is going through a DIPLOID (2N) phase

Question 12

The haploid phase is called…?

Answer 12

gametophyte, the gamete producing part of the plant

Question 13

The diploid phase is called …?

Answer 13

sporophyte, the spore producing part of the plant

Question 14

sporophytes produce…?

Answer 14

haploids (spores) via meiosis that form the gametes

Question 15

gametes produce…?

Answer 15

diploids by making egg and sperm cells which fuse to form sporophytes

Question 16

the cycle of making gametes then sporophytes again and again is called?

Answer 16

alteration of generations (vocab word)

Question 17

Are haploid parts (gamete) of a plant usually bigger of diploid (sporophyte) parts bigger on a plant?

Answer 17

sporophytes (diploids) are usually the majority of a plant’s body (except for green algae and mosses)