Problem 1 - Biology

Question

Plants that complete their life cycles in 1 year are called ____________; those that complete them in 2 years are _____________; and those that live year after year are ____________ ; (a) annuals; perennials; biennials (b) biennials; annuals; perennials (c) annuals; biennials; perennials (d) perennials; annuals; biennials (e) perennials; biennials; annuals

Step-by-Step Solution

Answer

The correct answer is (c) annuals; biennials; perennials.

Step 1: Identify Plant Life Cycle Terms

In this step, we need to identify the correct plant life cycle terms for the given time durations: 1-year cycle, 2-year cycle, and living year after year. - Plants completing their life cycle in 1 year are known as **annuals**. - Plants taking 2 years to complete their life cycle are called **biennials**. - Plants that grow and bloom over several seasons are termed **perennials**.

Step 2: Match the Terms to the Options

Now, let's match the identified plant terms from Step 1 to the given options: (a) annuals; perennials; biennials (b) biennials; annuals; perennials (c) annuals; biennials; perennials (d) perennials; annuals; biennials (e) perennials; biennials; annuals

Step 3: Select the Correct Option

Choose the option where the terms correctly match the given descriptions: - 1-year cycle: annuals - 2-year cycle: biennials - Multi-year cycle: perennials The correct answer is (c) annuals; biennials; perennials.

Key Concepts

Annual Plants

Annual plants are quite unique in the plant kingdom. They complete their entire life cycle within just one year. This means that they start from a seed, grow into a full plant, bloom, produce seeds, and then die, all within the span of a single growing season. This makes them perfect for gardeners who want a vibrant display in their garden every year without worrying about overwintering.
Annual plants are fast growers, and they make the most of the time they have. Some popular examples of annual plants include:

• Marigolds
• Petunias
• Sunflowers

In the garden, annuals offer bright colors and can fill in gaps quickly. They are great for adding instant beauty to any space. However, because they complete their life span in one season, they need to be replanted yearly if you want them to return.

Biennial Plants

Biennial plants have a more leisurely life cycle compared to annuals. They need two years to complete their full life cycle. In the first year, these plants focus on growing roots, stems, and leaves. They remain largely non-reproductive during this period, building strength and storing energy.
In the second year, biennials put their stored energy into producing flowers, fruits, and seeds before eventually dying. This growth pattern can make garden planning more challenging but also rewarding. Some common biennial plants include:

• Carrots
• Foxglove
• Parsley

Gardeners grow biennials in a two-year cycle, often by planting seeds every year to ensure blooms every season. Understanding their growth habit enables gardeners to maintain a more consistent garden appearance.

Perennial Plants

Perennial plants are loved by many gardeners for their longevity and low maintenance. Unlike annuals and biennials, perennials live for several years, often blooming each season once they establish themselves. This means they can bring consistent beauty without the need for replanting each year.
Some perennials may take a year or two to fully establish, but once they do, they provide continuous growth with only minimal care. Popular perennial plants include:

• Roses
• Lavender
• Hostas

Perennials are a hearty choice and come in many forms including shrubs, trees, and herbaceous plants. They are often used as the backbone in garden designs, providing lasting structure and enduring enjoyment from year to year.