Answer;
-Pellicle
Explanation;
-Protist cells may contain a single nucleus or many nuclei; they range in size from microscopic to thousands of meters in area. Protists may have animal-like cell membranes, plant-like cell walls, or may be covered by a pellicle.
-On a paramecium's exterior is found the pellicle. The pellicle is stiff to maintain the paramecium's shape and provide stability but it is also flexible to allow movement. It also acts as an attachment site for external organelles such as cilia.
15 degrees Celsius is colder than 20 degrees Celsius. It gets colder as the temperature decreases.
Jellyfish do not have a central nervous system.
Squids which belongs to Cephalopoda (class of Mollusca) have the most complex nervous system of the invertebrates. They have well-developed senses and large brains. So, they are considered as the most intelligent of the invertebrates.
Dolphins, on the other hand, are regarded as one the most intelligent animal.
During pregnancy, your infant is surrounded and cushioned through a fluid-crammed membranous sac known as the amniotic sac. Typically, at the start of or at some point of exertions your membranes will rupture — additionally referred to as your water breaking.
If your water breaks earlier than exertions start, it's known as prelabor rupture of membranes (PROM). Previously it became referred to as untimely rupture of membranes. When your water breaks, you may feel damp in your perineum, have sporadic or continuous little leaks of watery fluid from your perineum, or experience a more pronounced flow of clear or pale yellow fluid.
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