I'm alittle confused on how I'm supposed to answer this could you help me ?

a) Petiole

b) initiate growth of cells at the tips of the shoot and roots

Explanation:

Petiole is the plant structure that attaches leaf blade to plant stem. Meristem is present at the tip and sides of stems, roots and at inter nodes and helps in its growth.

Hope it helps! :)

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.