NCERT MCQ Solutions for Class 5 EVS Looking Around Chapter 5 Seeds and Seeds

Soaking legumes like chana (chickpeas) in water makes them swell and soften. This process reduces cooking time and prepares the seeds for easier digestion or for sprouting.

Seeds absorb a large amount of water through a process called imbibition. This causes them to swell significantly, which is the first step towards germination or softening for cooking.

Soaked seeds can be sprouted by tying them in a damp cloth. This provides the necessary moisture and air for germination, turning the seeds into highly nutritious sprouts.

Seed germination requires a balance of both air (oxygen) and water. A damp cloth provides this ideal condition, allowing the seed to breathe and absorb moisture simultaneously.

Seeds need oxygen for respiration to produce energy for growth. When completely submerged in water, they lack access to air and therefore cannot germinate or will eventually rot.

A drainage hole in a pot prevents waterlogging, which can drown plant roots by cutting off their oxygen supply. It ensures excess water drains away, maintaining healthy soil.

A seed can only sprout if its embryo is intact. Split lentils (dal) have been processed and broken, damaging the embryo and making germination impossible for the halves.

Carnivorous plants like the Pitcher plant have evolved to trap and digest insects. They typically grow in nutrient-poor soil and get essential nutrients from their prey.

Seed dispersal by animals often involves seeds with tiny hooks or burrs. These structures attach to fur or clothing, allowing the seed to travel long distances before falling off.

The invention of Velcro is a classic example of biomimicry. It was inspired by observing the tiny hooks on seeds that allow them to cling to surfaces.

Many common foods originated in different parts of the world. Chillies were introduced to the rest of the world from South America through trade, becoming integral to many cuisines.

Some plants use explosive dispersal to spread their seeds. Ripe pods, like those of soybeans, dry out and burst open, forcefully scattering the seeds away from the parent plant.

Global trade and human migration have led to the worldwide distribution of many plants. Cabbage, a staple vegetable, was originally cultivated in Europe before spreading to other continents.

Germination is the process where a seed begins to grow. For this to happen, most seeds require the right combination of water, air (oxygen), and suitable temperature.

Seed dispersal is crucial for plant survival. It reduces competition for resources like light and water between parent and offspring and helps colonize new, favorable habitats.

Plants use various methods for seed dispersal, including wind, animals, and explosive bursting. While dispersal by water is common in nature.

The invention of Velcro was directly inspired by nature. The inventor mimicked the tiny hooks found on plant seeds that allowed them to stick firmly to his dog’s fur.

Using a flexible material like thread is a practical way to measure the height of a growing plant. This accounts for curves and allows for accurate measurement against a scale.

Many seeds serve a dual purpose in the culinary world. Besides being planted to grow new plants, seeds like cumin and mustard are widely used as spices for flavouring.

Humans are significant agents of seed dispersal. We transport seeds intentionally for agriculture and gardening, and unintentionally when seeds attach to our clothing or goods during travel.