Define nyctinastic movement in plants.

Maranta, an ornamental houseplant shows nyctinastic response.

Complete the crossword puzzle:

Down:
1. Flowers of this plant shows nastic movements
3. This insect has powerful hind legs for jumping
4. A flightless bird
5. A mode of flight in large birds such as vultures
6. Special structures that help earthworm in moving
Across:
2. Forelimbs of seals and walruses are modified as _____
7. A bone in the arm (sounds funny!)
8. Also called sleep movements

Identify the wrong statement in the following, correct and rewrite it:

Rose plant shows seismonasty.

The movement in the leaves of the plant Mimosa pudica is nyctinasty.