Answer:
C) Most coniferous trees have both male and female cones.
Explanation:
- Unlike flowering plants, conifers do not bear flowers. instead of flower they bear male and female cones.
- The male cone produces the pollen and the female cone contains ovule which develop into seeds.
- The reproductive cycle of a conifer begins in the spring when the male cone releases pollen in the wind and these pollen get trapped in the scales of female cones.
- These pollen goes through a resting period and then fertilizes the ovule.that matures into seed.
- The seeds of conifers are naked. i.e. not enclosed
:
Answer:
Erosion and weathering include the effects of wind and rain, which slowly break down large rocks into smaller ones. Erosion and weathering transform boulders and even mountains into sediments, such as sand or mud. These three processes create the raw materials for new, sedimentary rocks.Weathering – Breaks pre-existing rock into small fragments or new minerals. Transportation of the sediments to a sedimentary basin.
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.
This is known as the double helix.
There are no directions…