Explanation

Blade → The flat, leaf-like part

Stipe → The stem-like structure

Holdfast → Anchors the organism to a surface (like a root)

These are characteristic parts of macroscopic algae (especially brown algae like Laminaria or Sargassum).

Explanation

As of the most widely accepted recent estimates, about 2.13 million species have been formally described by scientists.

This number includes:

• Animals (insects, mammals, birds, etc.)

• Plants

• Fungi

• Protists

• Bacteria and archaea (though many microbes remain undescribed)

Explanation

The alkaline mucus secreted by the Cowper's glands also plays an important role in neutralizing the acidic nature in the urine.

Explanation

Explanation

Micronutrients are essential elements required by organisms in small quantities for proper growth and development.

Among the options:

• Manganese, Iodine, Zinc, and Iron are all recognized micronutrients for humans and plants.

• Sodium, Magnesium, and Sulfur are considered macronutrients because they are required in larger amounts.

Explanation

 In a prokaryotic cell, the region where DNA is housed is called the nucleoid.

Unlike eukaryotic cells, prokaryotes do not have a nucleus enclosed by a membrane.

The nucleoid is a central area within the cytoplasm where the single, circular chromosome of the prokaryote resides. 

Explanation

The percentage of insect species out of all known organisms is approximately 53.1%,

While it's estimated that there are around 1.7 million known species, insects constitute over half of that number, with estimates suggesting around 900,000 species of insects. 

Explanation

Explanation

The breakdown of glucose by microorganisms, such as yeast, is called alcoholic fermentation.

Explanation