Answer:
they are the temperate zones
Explanation:
Answer:
Scanning Electron Microscopes
Explanation:
Answer:
Its Euglena
Explanation:
Shape change from normal elongated egg-shape to round-shape in stressful environment. These shape changes attain two transition phases. The I-transition phase is reversible where the organism can return to normal if favourable environment persists.
Answer:
The correct answer will be
1. Lengthen
2. Lengthen, shortens
3. Disassemble
Explanation:
There are three types of microtubules present during cell division: kinetochore, aster and polar microtubules.
1. During prophase: all types of microtubules grow out at their positive(+) ends which functions to pull and push the sister chromatids apart towards opposite poles so they lengthen.
2. During anaphase : non-kinetochore microtubules- polar microtubules polymerization takes place at their (+) ends which causes the spindle fibres to move apart while kinetochore microtubules which have been attached to the kinetochores of chromosomes shorten at their (+) ends and motor proteins travel to (-) end because of which sister chromatids move towards the spindle poles.
3. During telophase: non-kinetochore microtubules depolymerize or disassembles.
Thus, 1. Lengthen, 2. Lengthen, shortens and 3. Disassemble are the correct options.
<h2>Cycads and Palm</h2>
Explanation:
The resemblance between cycads and palm trees is only superficial
- Cycads are basically woody plants which have roots, a stem, leaves and reproductive structures known as cones
- The main roots of cycads are thickened and fleshy and as they may have storage capacities they are often termed tuberous
- Along with the fleshy stem they may have contractile properties which serve to regulate the level of the stem in the ground
- Specialized, upright-growing, branched roots, known as coralloid roots, are also produced by all species of Cycads
- The stems of cycads may be completely subterranean or emerge from the ground and be trunk-like
- The leaves of most cycads are once-divided (pinnate) and often develop an attractive palm-like crown
- Palm trees are a type of evergreen plant belonging to the Arecaceae family of plants
- Palm trees have branch-less stems and large evergreen leaves
- Generally, leaves of palm trees are either pinnate (feather-like leaves) or palmate (fan-like fronds)
- Another way to identify the type of palm tree is by the trunk shape, some of the tallest species of palm trees have long slender single trunks and dwarf varieties have usually short fat palm trunks
- Some smaller palm tree species may have clustered trunks with 3 or 4 short trunks growing together
- There are also some dwarf palm trees that just have bushy pinnate fronds growing out the ground and don’t have any trunk at all
