EVERYDAY SCIENCE

Detailed explanation-1: -Answer and Explanation: The correct option is c, oval. The cell shape is the characteristics of the bacterial species and bacteria are grouped under four categories based on their cell shape; spherical (coccus), rod-shaped (bacillus), comma-shaped (vibrium) and spiral (helical or spirillum).

Detailed explanation-2: -Bacteria are classified into five groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes). They can exist as single cells, in pairs, chains or clusters. Bacteria are found in every habitat on Earth: soil, rock, oceans and even arctic snow.

Detailed explanation-3: -The three basic shapes of bacteria are Cocci (round), Bacilli (rod), and Spirilla (spiral).

Detailed explanation-4: -Trying to make non-basic shapes, which means anything other than circles, squares, rectangles, and triangles, but the truth is that all shapes can be broken down into basic shapes. Most of these shapes are made out of circles, for example.

Detailed explanation-5: -Callouts are not a part of the Shapes option in the Insert tab.